diff --git a/specs/udmf_zdoom.txt b/specs/udmf_zdoom.txt
index 4fc57f856..3241bf4c8 100644
--- a/specs/udmf_zdoom.txt
+++ b/specs/udmf_zdoom.txt
@@ -113,6 +113,7 @@ Note: All <bool> fields default to false unless mentioned otherwise.
       blockprojectiles = <bool>;// Line blocks all projectiles
       blockuse = <bool>;        // Line blocks all use actions
       blocksight = <bool>;      // Line blocks monster line of sight
+      blockhitscan = <bool>;    // Line blocks hitscan attacks
       locknumber = <int>;       // Line special is locked
       arg0str = <string>;       // Alternate string-based version of arg0
 
@@ -204,6 +205,8 @@ Note: All <bool> fields default to false unless mentioned otherwise.
                                 // Parameter is the conversation ID, 0 meaning none.
       countsecret = <bool>;     // Picking up this actor counts as a secret.
       arg0str = <string>;       // Alternate string-based version of arg0
+	  gravity = <float>;		// Set per-actor gravity. Positive values are multiplied with the class's property, 
+	                            // negative values are used as their absolute. Default = 1.0.
 
       * Note about arg0str
 
diff --git a/src/actor.h b/src/actor.h
index 57674f5e0..6e5b10f4c 100644
--- a/src/actor.h
+++ b/src/actor.h
@@ -238,7 +238,7 @@ enum
 	MF4_RANDOMIZE		= 0x00000010,	// Missile has random initial tic count
 	MF4_NOSKIN			= 0x00000020,	// Player cannot use skins
 	MF4_FIXMAPTHINGPOS	= 0x00000040,	// Fix this actor's position when spawned as a map thing
-	MF4_ACTLIKEBRIDGE	= 0x00000080,	// Pickups can "stand" on this actor
+	MF4_ACTLIKEBRIDGE	= 0x00000080,	// Pickups can "stand" on this actor / cannot be moved by any sector action.
 	MF4_STRIFEDAMAGE	= 0x00000100,	// Strife projectiles only do up to 4x damage, not 8x
 
 	MF4_CANUSEWALLS		= 0x00000200,	// Can activate 'use' specials
@@ -270,7 +270,7 @@ enum
 	MF5_DONTDRAIN		= 0x00000001,	// cannot be drained health from.
 	MF5_INSTATECALL		= 0x00000002,	// This actor is being run through CallStateChain
 	MF5_NODROPOFF		= 0x00000004,	// cannot drop off under any circumstances.
-	/*					= 0x00000008,	*/
+	MF5_NOFORWARDFALL	= 0x00000008,	// Does not make any actor fall forward by being damaged by this
 	MF5_COUNTSECRET		= 0x00000010,	// From Doom 64: actor acts like a secret
 	MF5_AVOIDINGDROPOFF = 0x00000020,	// Used to move monsters away from dropoffs
 	MF5_NODAMAGE		= 0x00000040,	// Actor can be shot and reacts to being shot but takes no damage
@@ -286,7 +286,7 @@ enum
 	MF5_NEVERFAST		= 0x00010000,	// never uses 'fast' attacking logic
 	MF5_ALWAYSRESPAWN	= 0x00020000,	// always respawns, regardless of skill setting
 	MF5_NEVERRESPAWN	= 0x00040000,	// never respawns, regardless of skill setting
-	MF5_DONTRIP			= 0x00080000,	// Ripping projectiles explode when hittin this actor
+	MF5_DONTRIP			= 0x00080000,	// Ripping projectiles explode when hitting this actor
 	MF5_NOINFIGHTING	= 0x00100000,	// This actor doesn't switch target when it's hurt 
 	MF5_NOINTERACTION	= 0x00200000,	// Thing is completely excluded from any gameplay related checks
 	MF5_NOTIMEFREEZE	= 0x00400000,	// Actor is not affected by time freezer
@@ -333,6 +333,14 @@ enum
 	MF6_DOHARMSPECIES	= 0x08000000,	// Do hurt one's own species with projectiles.
 	MF6_INTRYMOVE		= 0x10000000,	// Executing P_TryMove
 	MF6_NOTAUTOAIMED	= 0x20000000,	// Do not subject actor to player autoaim.
+	MF6_NOTONAUTOMAP	= 0x40000000,	// will not be shown on automap with the 'scanner' powerup.
+	MF6_RELATIVETOFLOOR	= 0x80000000,	// [RC] Make flying actors be affected by lifts.
+
+// --- mobj.flags6 ---
+
+	MF7_NEVERTARGET		= 0x00000001,	// can not be targetted at all, even if monster friendliness is considered.
+	MF7_NOTELESTOMP		= 0x00000002,	// cannot telefrag under any circumstances (even when set by MAPINFO)
+	MF7_ALWAYSTELEFRAG	= 0x00000004,	// will unconditionally be telefragged when in the way. Overrides all other settings.
 
 // --- mobj.renderflags ---
 
@@ -806,6 +814,7 @@ public:
 	DWORD			flags4;			// [RH] Even more flags!
 	DWORD			flags5;			// OMG! We need another one.
 	DWORD			flags6;			// Shit! Where did all the flags go?
+	DWORD			flags7;			// 
 
 	// [BB] If 0, everybody can see the actor, if > 0, only members of team (VisibleToTeam-1) can see it.
 	DWORD			VisibleToTeam;
diff --git a/src/am_map.cpp b/src/am_map.cpp
index bae48120d..c22714316 100644
--- a/src/am_map.cpp
+++ b/src/am_map.cpp
@@ -115,6 +115,7 @@ CVAR (Color, am_interlevelcolor,	0xff0000,	CVAR_ARCHIVE);
 CVAR (Color, am_secretsectorcolor,	0xff00ff,	CVAR_ARCHIVE);
 CVAR (Color, am_thingcolor_friend,	0xfcfcfc,	CVAR_ARCHIVE);
 CVAR (Color, am_thingcolor_monster,	0xfcfcfc,	CVAR_ARCHIVE);
+CVAR (Color, am_thingcolor_ncmonster,	0xfcfcfc,	CVAR_ARCHIVE);
 CVAR (Color, am_thingcolor_item,	0xfcfcfc,	CVAR_ARCHIVE);
 CVAR (Color, am_thingcolor_citem,	0xfcfcfc,	CVAR_ARCHIVE);
 
@@ -134,6 +135,7 @@ CVAR (Color, am_ovsecretsectorcolor,0x00ffff,	CVAR_ARCHIVE);
 CVAR (Color, am_ovthingcolor,		0xe88800,	CVAR_ARCHIVE);
 CVAR (Color, am_ovthingcolor_friend,	0xe88800,	CVAR_ARCHIVE);
 CVAR (Color, am_ovthingcolor_monster,	0xe88800,	CVAR_ARCHIVE);
+CVAR (Color, am_ovthingcolor_ncmonster,	0xe88800,	CVAR_ARCHIVE);
 CVAR (Color, am_ovthingcolor_item,		0xe88800,	CVAR_ARCHIVE);
 CVAR (Color, am_ovthingcolor_citem,		0xe88800,	CVAR_ARCHIVE);
 
@@ -190,6 +192,7 @@ static const char *ColorNames[] = {
 		"ThingColor_Item", 
 		"ThingColor_CountItem", 
 		"ThingColor_Monster", 
+		"ThingColor_NocountMonster", 
 		"ThingColor_Friend",
 		"SpecialWallColor", 
 		"SecretWallColor", 
@@ -219,6 +222,7 @@ struct AMColorset
 		ThingColor_Item, 
 		ThingColor_CountItem, 
 		ThingColor_Monster, 
+		ThingColor_NocountMonster, 
 		ThingColor_Friend,
 		SpecialWallColor, 
 		SecretWallColor, 
@@ -318,6 +322,7 @@ static FColorCVar *cv_standard[] = {
 	&am_thingcolor_item,
 	&am_thingcolor_citem,
 	&am_thingcolor_monster,
+	&am_thingcolor_ncmonster,
 	&am_thingcolor_friend,
 	&am_specialwallcolor,
 	&am_secretwallcolor,
@@ -342,6 +347,7 @@ static FColorCVar *cv_overlay[] = {
 	&am_ovthingcolor_item,
 	&am_ovthingcolor_citem,
 	&am_ovthingcolor_monster,
+	&am_ovthingcolor_ncmonster,
 	&am_ovthingcolor_friend,
 	&am_ovspecialwallcolor,
 	&am_ovsecretwallcolor,
@@ -368,6 +374,7 @@ static unsigned char DoomColors[]= {
 	0x74,0xfc,0x6c, // thingcolor_item
 	0x74,0xfc,0x6c, // thingcolor_citem
 	0x74,0xfc,0x6c, // thingcolor_monster
+	0x74,0xfc,0x6c, // thingcolor_ncmonster
 	0x74,0xfc,0x6c, // thingcolor_friend
 	NOT_USED,		// specialwallcolor
 	NOT_USED,		// secretwallcolor
@@ -393,6 +400,7 @@ static unsigned char StrifeColors[]= {
 	219, 171,   0,	// thingcolor_item
 	219, 171,   0,	// thingcolor_citem
 	0xfc,0x00,0x00,	// thingcolor_monster
+	0xfc,0x00,0x00,	// thingcolor_ncmonster
 	0xfc,0x00,0x00, // thingcolor_friend
 	NOT_USED,		// specialwallcolor
 	NOT_USED,		// secretwallcolor
@@ -418,6 +426,7 @@ static unsigned char RavenColors[]= {
 	236, 236, 236,	// thingcolor_item
 	236, 236, 236,	// thingcolor_citem
 	236, 236, 236,	// thingcolor_monster
+	236, 236, 236,	// thingcolor_ncmonster
 	236, 236, 236,	// thingcolor_friend
 	NOT_USED,		// specialwallcolor
 	NOT_USED,		// secretwallcolor
@@ -2616,114 +2625,117 @@ void AM_drawThings ()
 		t = sectors[i].thinglist;
 		while (t)
 		{
-			p.x = t->x >> FRACTOMAPBITS;
-			p.y = t->y >> FRACTOMAPBITS;
-
-			if (am_showthingsprites > 0 && t->sprite > 0)
+			if (am_cheat > 0 || !(t->flags6 & MF6_NOTONAUTOMAP))
 			{
-				FTexture *texture = NULL;
-				spriteframe_t *frame;
-				angle_t rotation = 0;
+				p.x = t->x >> FRACTOMAPBITS;
+				p.y = t->y >> FRACTOMAPBITS;
 
-				// try all modes backwards until a valid texture has been found.	
-				for(int show = am_showthingsprites; show > 0 && texture == NULL; show--)
+				if (am_showthingsprites > 0 && t->sprite > 0)
 				{
-					const spritedef_t& sprite = sprites[t->sprite];
-					const size_t spriteIndex = sprite.spriteframes + (show > 1 ? t->frame : 0);
+					FTexture *texture = NULL;
+					spriteframe_t *frame;
+					angle_t rotation = 0;
+
+					// try all modes backwards until a valid texture has been found.	
+					for(int show = am_showthingsprites; show > 0 && texture == NULL; show--)
+					{
+						const spritedef_t& sprite = sprites[t->sprite];
+						const size_t spriteIndex = sprite.spriteframes + (show > 1 ? t->frame : 0);
+
+						frame = &SpriteFrames[spriteIndex];
+						angle_t angle = ANGLE_270 - t->angle;
+						if (frame->Texture[0] != frame->Texture[1]) angle += (ANGLE_180 / 16);
+						if (am_rotate == 1 || (am_rotate == 2 && viewactive))
+						{
+							angle += players[consoleplayer].camera->angle - ANGLE_90;
+						}
+						rotation = angle >> 28;
+
+						const FTextureID textureID = frame->Texture[show > 2 ? rotation : 0];
+						texture = TexMan(textureID);
+					}
+
+					if (texture == NULL) goto drawTriangle;	// fall back to standard display if no sprite can be found.
+
+					const fixed_t spriteScale = 10 * scale_mtof;
+
+					DrawMarker (texture, p.x, p.y, 0, !!(frame->Flip & (1 << rotation)),
+						spriteScale, spriteScale, 0, FRACUNIT, 0, LegacyRenderStyles[STYLE_Normal]);
+				}
+				else
+				{
+			drawTriangle:
+					angle = t->angle;
 
-					frame = &SpriteFrames[spriteIndex];
-					angle_t angle = ANGLE_270 - t->angle;
-					if (frame->Texture[0] != frame->Texture[1]) angle += (ANGLE_180 / 16);
 					if (am_rotate == 1 || (am_rotate == 2 && viewactive))
 					{
-						angle += players[consoleplayer].camera->angle - ANGLE_90;
+						AM_rotatePoint (&p.x, &p.y);
+						angle += ANG90 - players[consoleplayer].camera->angle;
 					}
-					rotation = angle >> 28;
 
-					const FTextureID textureID = frame->Texture[show > 2 ? rotation : 0];
-					texture = TexMan(textureID);
-				}
+					color = AMColors[AMColors.ThingColor];
 
-				if (texture == NULL) goto drawTriangle;	// fall back to standard display if no sprite can be found.
-
-				const fixed_t spriteScale = 10 * scale_mtof;
-
-				DrawMarker (texture, p.x, p.y, 0, !!(frame->Flip & (1 << rotation)),
-					spriteScale, spriteScale, 0, FRACUNIT, 0, LegacyRenderStyles[STYLE_Normal]);
-			}
-			else
-			{
-		drawTriangle:
-				angle = t->angle;
-
-				if (am_rotate == 1 || (am_rotate == 2 && viewactive))
-				{
-					AM_rotatePoint (&p.x, &p.y);
-					angle += ANG90 - players[consoleplayer].camera->angle;
-				}
-
-				color = AMColors[AMColors.ThingColor];
-
-				// use separate colors for special thing types
-				if (t->flags3&MF3_ISMONSTER && !(t->flags&MF_CORPSE))
-				{
-					if (t->flags & MF_FRIENDLY || !(t->flags & MF_COUNTKILL)) color = AMColors[AMColors.ThingColor_Friend];
-					else color = AMColors[AMColors.ThingColor_Monster];
-				}
-				else if (t->flags&MF_SPECIAL)
-				{
-					// Find the key's own color.
-					// Only works correctly if single-key locks have lower numbers than any-key locks.
-					// That is the case for all default keys, however.
-					if (t->IsKindOf(RUNTIME_CLASS(AKey)))
+					// use separate colors for special thing types
+					if (t->flags3&MF3_ISMONSTER && !(t->flags&MF_CORPSE))
 					{
-						if (G_SkillProperty(SKILLP_EasyKey))
+						if (t->flags & MF_FRIENDLY) color = AMColors[AMColors.ThingColor_Friend];
+						else if (!(t->flags & MF_COUNTKILL)) color = AMColors[AMColors.ThingColor_NocountMonster];
+						else color = AMColors[AMColors.ThingColor_Monster];
+					}
+					else if (t->flags&MF_SPECIAL)
+					{
+						// Find the key's own color.
+						// Only works correctly if single-key locks have lower numbers than any-key locks.
+						// That is the case for all default keys, however.
+						if (t->IsKindOf(RUNTIME_CLASS(AKey)))
 						{
-							// Already drawn by AM_drawKeys(), so don't draw again
-							color.Index = -1;
-						}
-						else if (am_showkeys)
-						{
-							int P_GetMapColorForKey (AInventory * key);
-							int c = P_GetMapColorForKey(static_cast<AKey *>(t));
+							if (G_SkillProperty(SKILLP_EasyKey))
+							{
+								// Already drawn by AM_drawKeys(), so don't draw again
+								color.Index = -1;
+							}
+							else if (am_showkeys)
+							{
+								int P_GetMapColorForKey (AInventory * key);
+								int c = P_GetMapColorForKey(static_cast<AKey *>(t));
 
-							if (c >= 0)	color.FromRGB(RPART(c), GPART(c), BPART(c));
-							else color = AMColors[AMColors.ThingColor_CountItem];
-							AM_drawLineCharacter(&CheatKey[0], CheatKey.Size(), 0, 0, color, p.x, p.y);
-							color.Index = -1;
+								if (c >= 0)	color.FromRGB(RPART(c), GPART(c), BPART(c));
+								else color = AMColors[AMColors.ThingColor_CountItem];
+								AM_drawLineCharacter(&CheatKey[0], CheatKey.Size(), 0, 0, color, p.x, p.y);
+								color.Index = -1;
+							}
+							else
+							{
+								color = AMColors[AMColors.ThingColor_Item];
+							}
 						}
+						else if (t->flags&MF_COUNTITEM)
+							color = AMColors[AMColors.ThingColor_CountItem];
 						else
-						{
 							color = AMColors[AMColors.ThingColor_Item];
-						}
 					}
-					else if (t->flags&MF_COUNTITEM)
-						color = AMColors[AMColors.ThingColor_CountItem];
-					else
-						color = AMColors[AMColors.ThingColor_Item];
-				}
 
-				if (color.Index != -1)
-				{
-					AM_drawLineCharacter
-						(thintriangle_guy, NUMTHINTRIANGLEGUYLINES,
-						16<<MAPBITS, angle, color, p.x, p.y);
-				}
-
-				if (am_cheat == 3 || am_cheat == 6)
-				{
-					static const mline_t box[4] =
+					if (color.Index != -1)
 					{
-						{ { -MAPUNIT, -MAPUNIT }, {  MAPUNIT, -MAPUNIT } },
-						{ {  MAPUNIT, -MAPUNIT }, {  MAPUNIT,  MAPUNIT } },
-						{ {  MAPUNIT,  MAPUNIT }, { -MAPUNIT,  MAPUNIT } },
-						{ { -MAPUNIT,  MAPUNIT }, { -MAPUNIT, -MAPUNIT } },
-					};
+						AM_drawLineCharacter
+							(thintriangle_guy, NUMTHINTRIANGLEGUYLINES,
+							16<<MAPBITS, angle, color, p.x, p.y);
+					}
 
-					AM_drawLineCharacter (box, 4, t->radius >> FRACTOMAPBITS, angle - t->angle, color, p.x, p.y);
+					if (am_cheat == 3 || am_cheat == 6)
+					{
+						static const mline_t box[4] =
+						{
+							{ { -MAPUNIT, -MAPUNIT }, {  MAPUNIT, -MAPUNIT } },
+							{ {  MAPUNIT, -MAPUNIT }, {  MAPUNIT,  MAPUNIT } },
+							{ {  MAPUNIT,  MAPUNIT }, { -MAPUNIT,  MAPUNIT } },
+							{ { -MAPUNIT,  MAPUNIT }, { -MAPUNIT, -MAPUNIT } },
+						};
+
+						AM_drawLineCharacter (box, 4, t->radius >> FRACTOMAPBITS, angle - t->angle, color, p.x, p.y);
+					}
 				}
 			}
-
 			t = t->snext;
 		}
 	}
diff --git a/src/d_main.cpp b/src/d_main.cpp
index f2097d3b4..e7fe56f78 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -855,7 +855,7 @@ void D_Display ()
 		FTexture *tex;
 		int x;
 
-		tex = TexMan[gameinfo.PauseSign];
+		tex = TexMan(gameinfo.PauseSign);
 		x = (SCREENWIDTH - tex->GetScaledWidth() * CleanXfac)/2 +
 			tex->GetScaledLeftOffset() * CleanXfac;
 		screen->DrawTexture (tex, x, 4, DTA_CleanNoMove, true, TAG_DONE);
@@ -1300,7 +1300,7 @@ void D_DoAdvanceDemo (void)
 		gamestate = GS_DEMOSCREEN;
 		pagename = gameinfo.titlePage;
 		pagetic = (int)(gameinfo.titleTime * TICRATE);
-		S_StartMusic (gameinfo.titleMusic);
+		S_ChangeMusic (gameinfo.titleMusic, gameinfo.titleOrder, false);
 		demosequence = 3;
 		pagecount = 0;
 		C_HideConsole ();
diff --git a/src/doomdata.h b/src/doomdata.h
index eeff13e2e..55903170a 100644
--- a/src/doomdata.h
+++ b/src/doomdata.h
@@ -153,6 +153,7 @@ enum ELineFlags
 	ML_BLOCKPROJECTILE			= 0x01000000,
 	ML_BLOCKUSE					= 0x02000000,	// blocks all use actions through this line
 	ML_BLOCKSIGHT				= 0x04000000,	// blocks monster line of sight
+	ML_BLOCKHITSCAN				= 0x08000000,	// blocks hitscan attacks
 };
 
 
@@ -342,6 +343,7 @@ struct FMapThing
 	int			special;
 	int			args[5];
 	int			Conversation;
+	fixed_t		gravity;
 
 	void Serialize (FArchive &);
 };
diff --git a/src/g_shared/a_artifacts.cpp b/src/g_shared/a_artifacts.cpp
index c71d3cc81..d4690139f 100644
--- a/src/g_shared/a_artifacts.cpp
+++ b/src/g_shared/a_artifacts.cpp
@@ -589,7 +589,7 @@ void APowerInvisibility::DoEffect ()
 	Super::DoEffect();
 	// Due to potential interference with other PowerInvisibility items
 	// the effect has to be refreshed each tic.
-	fixed_t ts = Strength * (special1 + 1); if (ts > FRACUNIT) ts = FRACUNIT;
+	fixed_t ts = (Strength/100) * (special1 + 1); if (ts > FRACUNIT) ts = FRACUNIT;
 	Owner->alpha = clamp<fixed_t>((OPAQUE - ts), 0, OPAQUE);
 	switch (Mode)
 	{
@@ -669,7 +669,7 @@ int APowerInvisibility::AlterWeaponSprite (visstyle_t *vis)
 	else if (changed == 1)
 	{
 		// something else set the weapon sprite back to opaque but this item is still active.
-		fixed_t ts = Strength * (special1 + 1); if (ts > FRACUNIT) ts = FRACUNIT;
+		fixed_t ts = (Strength/100) * (special1 + 1); if (ts > FRACUNIT) ts = FRACUNIT;
 		vis->alpha = clamp<fixed_t>((OPAQUE - ts), 0, OPAQUE);
 		switch (Mode)
 		{
@@ -696,7 +696,7 @@ int APowerInvisibility::AlterWeaponSprite (visstyle_t *vis)
 	// Handling of Strife-like cumulative invisibility powerups, the weapon itself shouldn't become invisible
 	if ((vis->alpha < TRANSLUC25 && special1 > 0) || (vis->alpha == 0))
 	{
-		vis->alpha = clamp<fixed_t>((OPAQUE - Strength), 0, OPAQUE);
+		vis->alpha = clamp<fixed_t>((OPAQUE - (Strength/100)), 0, OPAQUE);
 		vis->colormap = SpecialColormaps[INVERSECOLORMAP].Colormap;
 	}
 	return -1;	// This item is valid so another one shouldn't reset the translucency
@@ -1697,7 +1697,7 @@ void APowerRegeneration::DoEffect()
 {
 	if (Owner != NULL && Owner->health > 0 && (level.time & 31) == 0)
 	{
-		if (P_GiveBody(Owner, 5))
+		if (P_GiveBody(Owner, Strength/FRACUNIT))
 		{
 			S_Sound(Owner, CHAN_ITEM, "*regenerate", 1, ATTN_NORM );
 		}
diff --git a/src/g_shared/a_pickups.h b/src/g_shared/a_pickups.h
index 482bdab8a..b3a66097f 100644
--- a/src/g_shared/a_pickups.h
+++ b/src/g_shared/a_pickups.h
@@ -125,6 +125,8 @@ enum
 	IF_RESTRICTABSOLUTELY = 1<<19,	// RestrictedTo and ForbiddenTo do not allow pickup in any form by other classes
 	IF_NEVERRESPAWN		= 1<<20,	// Never, ever respawns
 	IF_NOSCREENFLASH	= 1<<21,	// No pickup flash on the player's screen
+	IF_TOSSED			= 1<<22,	// Was spawned by P_DropItem (i.e. as a monster drop)
+
 };
 
 
diff --git a/src/gi.cpp b/src/gi.cpp
index 75476c800..d9d58dc9e 100644
--- a/src/gi.cpp
+++ b/src/gi.cpp
@@ -184,6 +184,20 @@ const char* GameInfoBorders[] =
 		gameinfo.key.color = NAME_Null; \
 	}
 
+#define GAMEINFOKEY_MUSIC(key, order, variable) \
+	else if(nextKey.CompareNoCase(variable) == 0) \
+	{ \
+		sc.MustGetToken(TK_StringConst); \
+		gameinfo.order = 0; \
+		char *colon = strchr (sc.String, ':'); \
+		if (colon) \
+		{ \
+			gameinfo.order = atoi(colon+1); \
+			*colon = 0; \
+		} \
+		gameinfo.key = sc.String; \
+	}
+
 
 void FMapInfoParser::ParseGameInfo()
 {
@@ -286,12 +300,12 @@ void FMapInfoParser::ParseGameInfo()
 		GAMEINFOKEY_STRINGARRAY(creditPages, "CreditPage", 8, true)
 		GAMEINFOKEY_STRINGARRAY(PlayerClasses, "addplayerclasses", 0, false)
 		GAMEINFOKEY_STRINGARRAY(PlayerClasses, "playerclasses", 0, true)
-		GAMEINFOKEY_STRING(titleMusic, "titleMusic")
+		GAMEINFOKEY_MUSIC(titleMusic, titleOrder, "titleMusic")
 		GAMEINFOKEY_FLOAT(titleTime, "titleTime")
 		GAMEINFOKEY_FLOAT(advisoryTime, "advisoryTime")
 		GAMEINFOKEY_FLOAT(pageTime, "pageTime")
 		GAMEINFOKEY_STRING(chatSound, "chatSound")
-		GAMEINFOKEY_STRING(finaleMusic, "finaleMusic")
+		GAMEINFOKEY_MUSIC(finaleMusic, finaleOrder, "finaleMusic")
 		GAMEINFOKEY_CSTRING(finaleFlat, "finaleFlat", 8)
 		GAMEINFOKEY_STRINGARRAY(finalePages, "finalePage", 8, true)
 		GAMEINFOKEY_STRINGARRAY(infoPages, "addinfoPage", 8, false)
@@ -309,7 +323,7 @@ void FMapInfoParser::ParseGameInfo()
 		GAMEINFOKEY_COLOR(defaultbloodparticlecolor, "defaultbloodparticlecolor")
 		GAMEINFOKEY_STRING(backpacktype, "backpacktype")
 		GAMEINFOKEY_STRING(statusbar, "statusbar")
-		GAMEINFOKEY_STRING(intermissionMusic, "intermissionMusic")
+		GAMEINFOKEY_MUSIC(intermissionMusic, intermissionOrder, "intermissionMusic")
 		GAMEINFOKEY_STRING(CursorPic, "CursorPic")
 		GAMEINFOKEY_BOOL(noloopfinalemusic, "noloopfinalemusic")
 		GAMEINFOKEY_BOOL(drawreadthis, "drawreadthis")
diff --git a/src/gi.h b/src/gi.h
index ff678df07..6b887e1dd 100644
--- a/src/gi.h
+++ b/src/gi.h
@@ -91,11 +91,13 @@ struct gameinfo_t
 	TArray<FName> PlayerClasses;
 
 	FString titleMusic;
+	int titleOrder;
 	float titleTime;
 	float advisoryTime;
 	float pageTime;
 	FString chatSound;
 	FString finaleMusic;
+	int finaleOrder;
 	char finaleFlat[9];
 	char borderFlat[9];
 	char SkyFlatName[9];
@@ -114,6 +116,7 @@ struct gameinfo_t
 	FString backpacktype;
 	FString statusbar;
 	FString intermissionMusic;
+	int intermissionOrder;
 	FString CursorPic;
 	DWORD dimcolor;
 	float dimamount;
diff --git a/src/gstrings.h b/src/gstrings.h
index 41e37dbc5..770510cfd 100644
--- a/src/gstrings.h
+++ b/src/gstrings.h
@@ -42,11 +42,6 @@
 
 extern FStringTable GStrings;
 
-// QuitGame messages
-#define NUM_QUITDOOMMESSAGES   14
-#define NUM_QUITSTRIFEMESSAGES 8
-#define NUM_QUITCHEXMESSAGES   7
-
 extern const char *endmsg[];
 
 
diff --git a/src/intermission/intermission.cpp b/src/intermission/intermission.cpp
index 9587711ab..95f5dc07e 100644
--- a/src/intermission/intermission.cpp
+++ b/src/intermission/intermission.cpp
@@ -80,7 +80,7 @@ void DIntermissionScreen::Init(FIntermissionAction *desc, bool first)
 		if (desc->mMusic.IsEmpty())
 		{
 			// only start the default music if this is the first action in an intermission
-			if (first) S_ChangeMusic (gameinfo.finaleMusic, 0, desc->mMusicLooping);
+			if (first) S_ChangeMusic (gameinfo.finaleMusic, gameinfo.finaleOrder, desc->mMusicLooping);
 		}
 		else
 		{
diff --git a/src/m_cheat.cpp b/src/m_cheat.cpp
index 6a020895c..42897277f 100644
--- a/src/m_cheat.cpp
+++ b/src/m_cheat.cpp
@@ -311,6 +311,7 @@ void cht_DoCheat (player_t *player, int cheat)
 				player->mo->flags4 = player->mo->GetDefault()->flags4;
 				player->mo->flags5 = player->mo->GetDefault()->flags5;
 				player->mo->flags6 = player->mo->GetDefault()->flags6;
+				player->mo->flags7 = player->mo->GetDefault()->flags7;
 				player->mo->renderflags &= ~RF_INVISIBLE;
 				player->mo->height = player->mo->GetDefault()->height;
 				player->mo->radius = player->mo->GetDefault()->radius;
diff --git a/src/menu/menu.cpp b/src/menu/menu.cpp
index 0e36ef073..c3fb46c0e 100644
--- a/src/menu/menu.cpp
+++ b/src/menu/menu.cpp
@@ -207,7 +207,7 @@ bool DMenu::MouseEventBack(int type, int x, int y)
 {
 	if (m_show_backbutton >= 0)
 	{
-		FTexture *tex = TexMan[gameinfo.mBackButton];
+		FTexture *tex = TexMan(gameinfo.mBackButton);
 		if (tex != NULL)
 		{
 			if (m_show_backbutton&1) x -= screen->GetWidth() - tex->GetScaledWidth() * CleanXfac;
@@ -263,7 +263,7 @@ void DMenu::Drawer ()
 {
 	if (this == DMenu::CurrentMenu && BackbuttonAlpha > 0 && m_show_backbutton >= 0 && m_use_mouse)
 	{
-		FTexture *tex = TexMan[gameinfo.mBackButton];
+		FTexture *tex = TexMan(gameinfo.mBackButton);
 		int w = tex->GetScaledWidth() * CleanXfac;
 		int h = tex->GetScaledHeight() * CleanYfac;
 		int x = (!(m_show_backbutton&1))? 0:screen->GetWidth() - w;
@@ -909,6 +909,11 @@ CCMD (openmenu)
 	M_SetMenu(argv[1], -1);
 }
 
+CCMD (closemenu)
+{
+	M_ClearMenus();
+}
+
 //
 //		Toggle messages on/off
 //
diff --git a/src/menu/optionmenuitems.h b/src/menu/optionmenuitems.h
index d57e13d05..ff3eb016a 100644
--- a/src/menu/optionmenuitems.h
+++ b/src/menu/optionmenuitems.h
@@ -763,7 +763,7 @@ public:
 		: FOptionMenuItem(label, menu)
 	{
 		FBaseCVar *cv = FindCVar(menu, NULL);
-		if (cv->GetRealType() == CVAR_Color)
+		if (cv != NULL && cv->GetRealType() == CVAR_Color)
 		{
 			mCVar = (FColorCVar*)cv;
 		}
diff --git a/src/namedef.h b/src/namedef.h
index d995a4d68..8f762125e 100644
--- a/src/namedef.h
+++ b/src/namedef.h
@@ -467,6 +467,7 @@ xx(blockprojectiles)
 xx(blockuse)
 xx(hidden)
 xx(blocksight)
+xx(blockhitscan)
 
 xx(Renderstyle)
 
diff --git a/src/p_3dfloors.cpp b/src/p_3dfloors.cpp
index 56b34ca0f..51ac24229 100644
--- a/src/p_3dfloors.cpp
+++ b/src/p_3dfloors.cpp
@@ -60,7 +60,7 @@
 FDynamicColormap *F3DFloor::GetColormap()
 {
 	// If there's no fog in either model or target sector this is easy and fast.
-	if ((target->ColorMap->Fade == 0 && model->ColorMap->Fade == 0) || (flags & FF_FADEWALLS))
+	if ((target->ColorMap->Fade == 0 && model->ColorMap->Fade == 0) || (flags & (FF_FADEWALLS|FF_FOG)))
 	{
 		return model->ColorMap;
 	}
diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index abd420de4..57a4c51c0 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -46,6 +46,7 @@
 #include "p_acs.h"
 #include "p_saveg.h"
 #include "p_lnspec.h"
+#include "p_enemy.h"
 #include "m_random.h"
 #include "doomstat.h"
 #include "c_console.h"
@@ -4232,6 +4233,8 @@ enum EACSFunctions
 	ACSF_PlayActorSound,
 	ACSF_SpawnDecal,
 	ACSF_CheckFont,
+	ACSF_DropItem,
+	ACSF_CheckFlag,
 
 	// ZDaemon
 	ACSF_GetTeamScore = 19620,	// (int team)
@@ -5230,6 +5233,49 @@ doplaysound:			if (funcIndex == ACSF_PlayActorSound)
 			// bool CheckFont(str fontname)
 			return V_GetFont(FBehavior::StaticLookupString(args[0])) != NULL;
 
+		case ACSF_DropItem:
+		{
+			const char *type = FBehavior::StaticLookupString(args[1]);
+			int amount = argCount >= 3? args[2] : -1;
+			int chance = argCount >= 4? args[3] : 256;
+			const PClass *cls = PClass::FindClass(type);
+			int cnt = 0;
+			if (cls != NULL)
+			{
+				if (args[0] == 0)
+				{
+					if (activator != NULL)
+					{
+						P_DropItem(activator, cls, amount, chance);
+						cnt++;
+					}
+				}
+				else
+				{
+					FActorIterator it(args[0]);
+					AActor *actor;
+
+					while ((actor = it.Next()) != NULL)
+					{
+						P_DropItem(actor, cls, amount, chance);
+						cnt++;
+					}
+				}
+				return cnt;
+			}
+			break;
+		}
+
+		case ACSF_CheckFlag:
+		{
+			AActor *actor = SingleActorFromTID(args[0], activator);
+			if (actor != NULL)
+			{
+				return !!CheckActorFlag(actor, FBehavior::StaticLookupString(args[1]));
+			}
+			break;
+		}
+
 		default:
 			break;
 	}
diff --git a/src/p_buildmap.cpp b/src/p_buildmap.cpp
index 0c94945e8..136667b37 100644
--- a/src/p_buildmap.cpp
+++ b/src/p_buildmap.cpp
@@ -698,6 +698,7 @@ static int LoadSprites (spritetype *sprites, Xsprite *xsprites, int numsprites,
 		mapthings[count].SkillFilter = 0xffff;
 		mapthings[count].flags = MTF_SINGLE|MTF_COOPERATIVE|MTF_DEATHMATCH;
 		mapthings[count].special = 0;
+		mapthings[count].gravity = FRACUNIT;
 
 		if (xsprites != NULL && sprites[i].lotag == 710)
 		{ // Blood ambient sound
@@ -876,4 +877,4 @@ void ACustomSprite::BeginPlay ()
 		renderflags |= RF_XFLIP;
 	if (args[4] & 8)
 		renderflags |= RF_YFLIP;
-}
\ No newline at end of file
+}
diff --git a/src/p_enemy.cpp b/src/p_enemy.cpp
index c49c33575..cd758933a 100644
--- a/src/p_enemy.cpp
+++ b/src/p_enemy.cpp
@@ -1425,6 +1425,9 @@ AActor *LookForEnemiesInBlock (AActor *lookee, int index, void *extparam)
 		if (!(link->flags3 & MF3_ISMONSTER))
 			continue;			// don't target it if it isn't a monster (could be a barrel)
 
+		if (link->flags7 & MF7_NEVERTARGET)
+			continue;
+
 		other = NULL;
 		if (link->flags & MF_FRIENDLY)
 		{
@@ -2656,6 +2659,7 @@ static bool P_CheckForResurrection(AActor *self, bool usevilestates)
 			corpsehit->flags4 = info->flags4;
 			corpsehit->flags5 = info->flags5;
 			corpsehit->flags6 = info->flags6;
+			corpsehit->flags7 = info->flags7;
 			corpsehit->health = info->health;
 			corpsehit->target = NULL;
 			corpsehit->lastenemy = NULL;
@@ -3131,6 +3135,7 @@ AInventory *P_DropItem (AActor *source, PClassActor *type, int dropamount, int c
 			{
 				AInventory *inv = static_cast<AInventory *>(mo);
 				ModifyDropAmount(inv, dropamount);
+				inv->ItemFlags |= IF_TOSSED;
 				if (inv->SpecialDropAction (source))
 				{
 					// The special action indicates that the item should not spawn
diff --git a/src/p_interaction.cpp b/src/p_interaction.cpp
index 192630fe4..1d6e05a53 100644
--- a/src/p_interaction.cpp
+++ b/src/p_interaction.cpp
@@ -1138,7 +1138,9 @@ int P_DamageMobj (AActor *target, AActor *inflictor, AActor *source, int damage,
 				 && (pr_damagemobj()&1)
 				 // [RH] But only if not too fast and not flying
 				 && thrust < 10*FRACUNIT
-				 && !(target->flags & MF_NOGRAVITY))
+				 && !(target->flags & MF_NOGRAVITY)
+				 && (inflictor == NULL || !(inflictor->flags5 & MF5_NOFORWARDFALL))
+				 )
 			{
 				ang += ANG180;
 				thrust *= 4;
@@ -1501,6 +1503,9 @@ bool AActor::OkayToSwitchTarget (AActor *other)
 	if (other == this)
 		return false;		// [RH] Don't hate self (can happen when shooting barrels)
 
+	if (other->flags7 & MF7_NEVERTARGET)
+		return false;		// never EVER target me!
+
 	if (!(other->flags & MF_SHOOTABLE))
 		return false;		// Don't attack things that can't be hurt
 
diff --git a/src/p_lnspec.cpp b/src/p_lnspec.cpp
index d6524f848..a17ef83d7 100644
--- a/src/p_lnspec.cpp
+++ b/src/p_lnspec.cpp
@@ -2545,6 +2545,7 @@ FUNC(LS_Line_SetBlocking)
 		ML_RAILING,
 		ML_BLOCKUSE,
 		ML_BLOCKSIGHT,
+		ML_BLOCKHITSCAN,
 		-1
 	};
 
diff --git a/src/p_map.cpp b/src/p_map.cpp
index f9c9b8087..180318b1d 100644
--- a/src/p_map.cpp
+++ b/src/p_map.cpp
@@ -334,8 +334,7 @@ bool P_TeleportMove (AActor *thing, fixed_t x, fixed_t y, fixed_t z, bool telefr
 					
 	spechit.Clear ();
 
-	bool StompAlwaysFrags = (thing->flags2 & MF2_TELESTOMP) || 
-							(level.flags & LEVEL_MONSTERSTELEFRAG) || telefrag;
+	bool StompAlwaysFrags = ((thing->flags2 & MF2_TELESTOMP) || (level.flags & LEVEL_MONSTERSTELEFRAG) || telefrag) && !(thing->flags7 & MF7_NOTELESTOMP);
 
 	FBoundingBox box(x, y, thing->radius);
 	FBlockLinesIterator it(box);
@@ -383,7 +382,8 @@ bool P_TeleportMove (AActor *thing, fixed_t x, fixed_t y, fixed_t z, bool telefr
 
 		// monsters don't stomp things except on boss level
 		// [RH] Some Heretic/Hexen monsters can telestomp
-		if (StompAlwaysFrags && !(th->flags6 & MF6_NOTELEFRAG))
+		// ... and some items can never be telefragged while others will be telefragged by everything that teleports upon them.
+		if ((StompAlwaysFrags && !(th->flags6 & MF6_NOTELEFRAG)) || (th->flags7 & MF7_ALWAYSTELEFRAG))
 		{
 			P_DamageMobj (th, thing, thing, TELEFRAG_DAMAGE, NAME_Telefrag, DMG_THRUSTLESS);
 			continue;
@@ -3563,7 +3563,7 @@ AActor *P_LineAttack (AActor *t1, angle_t angle, fixed_t distance,
 	else tflags = TRACE_NoSky|TRACE_Impact;
 
 	if (!Trace (t1->x, t1->y, shootz, t1->Sector, vx, vy, vz, distance,
-		MF_SHOOTABLE, ML_BLOCKEVERYTHING, t1, trace,
+		MF_SHOOTABLE, ML_BLOCKEVERYTHING|ML_BLOCKHITSCAN, t1, trace,
 		tflags, hitGhosts ? CheckForGhost : CheckForSpectral))
 	{ // hit nothing
 		if (puffDefaults == NULL)
@@ -5050,6 +5050,15 @@ void PIT_FloorDrop (AActor *thing, FChangePosition *cpos)
 			P_CheckFakeFloorTriggers (thing, oldz);
 		}
 	}
+	else if ((thing->z != oldfloorz && !(thing->flags & MF_NOLIFTDROP)))
+	{
+		fixed_t oldz = thing->z;
+		if ((thing->flags & MF_NOGRAVITY) && (thing->flags6 & MF6_RELATIVETOFLOOR))
+		{
+			thing->z = thing->z - oldfloorz + thing->floorz;
+			P_CheckFakeFloorTriggers (thing, oldz);
+		}
+	}
 }
 
 //=============================================================================
@@ -5061,6 +5070,7 @@ void PIT_FloorDrop (AActor *thing, FChangePosition *cpos)
 void PIT_FloorRaise (AActor *thing, FChangePosition *cpos)
 {
 	fixed_t oldfloorz = thing->floorz;
+	fixed_t oldz = thing->z;
 
 	P_AdjustFloorCeil (thing, cpos);
 
@@ -5075,22 +5085,30 @@ void PIT_FloorRaise (AActor *thing, FChangePosition *cpos)
 			return; // do not move bridge things
 		}
 		intersectors.Clear ();
-		fixed_t oldz = thing->z;
 		thing->z = thing->floorz;
-		switch (P_PushUp (thing, cpos))
+	}
+	else
+	{
+		if((thing->flags & MF_NOGRAVITY) && (thing->flags6 & MF6_RELATIVETOFLOOR))
 		{
-		default:
-			P_CheckFakeFloorTriggers (thing, oldz);
-			break;
-		case 1:
-			P_DoCrunch (thing, cpos);
-			P_CheckFakeFloorTriggers (thing, oldz);
-			break;
-		case 2:
-			P_DoCrunch (thing, cpos);
-			thing->z = oldz;
-			break;
+			intersectors.Clear ();
+			thing->z = thing->z - oldfloorz + thing->floorz;
 		}
+		else return;
+	}
+	switch (P_PushUp (thing, cpos))
+	{
+	default:
+		P_CheckFakeFloorTriggers (thing, oldz);
+		break;
+	case 1:
+		P_DoCrunch (thing, cpos);
+		P_CheckFakeFloorTriggers (thing, oldz);
+		break;
+	case 2:
+		P_DoCrunch (thing, cpos);
+		thing->z = oldz;
+		break;
 	}
 }
 
diff --git a/src/p_mobj.cpp b/src/p_mobj.cpp
index f3fb9a55e..61bdaf711 100644
--- a/src/p_mobj.cpp
+++ b/src/p_mobj.cpp
@@ -285,8 +285,12 @@ void AActor::Serialize (FArchive &arc)
 		<< flags3
 		<< flags4
 		<< flags5
-		<< flags6
-		<< special1
+		<< flags6;
+	if (SaveVersion >= 4504)
+	{
+		arc << flags7;
+	}
+	arc	<< special1
 		<< special2
 		<< health
 		<< movedir
@@ -921,7 +925,7 @@ void AActor::CopyFriendliness (AActor *other, bool changeTarget, bool resetHealt
 	flags4 = (flags4 & ~(MF4_NOHATEPLAYERS | MF4_BOSSSPAWNED)) | (other->flags4 & (MF4_NOHATEPLAYERS | MF4_BOSSSPAWNED));
 	FriendPlayer = other->FriendPlayer;
 	DesignatedTeam = other->DesignatedTeam;
-	if (changeTarget && other->target != NULL && !(other->target->flags3 & MF3_NOTARGET))
+	if (changeTarget && other->target != NULL && !(other->target->flags3 & MF3_NOTARGET) && !(other->target->flags7 & MF7_NEVERTARGET))
 	{
 		// LastHeard must be set as well so that A_Look can react to the new target if called
 		LastHeard = target = other->target;
@@ -4822,6 +4826,10 @@ AActor *P_SpawnMapThing (FMapThing *mthing, int position)
 	mobj->SpawnPoint[2] = mthing->z;
 	mobj->SpawnAngle = mthing->angle;
 	mobj->SpawnFlags = mthing->flags;
+	if (mthing->gravity < 0) mobj->gravity = -mthing->gravity;
+	else if (mthing->gravity > 0) mobj->gravity = FixedMul(mobj->gravity, mthing->gravity);
+	else mobj->flags &= ~MF_NOGRAVITY;
+
 	P_FindFloorCeiling(mobj, FFCF_SAMESECTOR | FFCF_ONLY3DFLOORS | FFCF_3DRESTRICT);
 
 	if (!(mobj->flags2 & MF2_ARGSDEFINED))
@@ -6227,6 +6235,9 @@ void PrintMiscActorInfo(AActor *query)
 		Printf("\n\tflags6: %x", query->flags6);
 		for (flagi = 0; flagi <= 31; flagi++)
 			if (query->flags6 & 1<<flagi) Printf(" %s", FLAG_NAME(1<<flagi, flags6));
+		Printf("\n\tflags7: %x", query->flags7);
+		for (flagi = 0; flagi <= 31; flagi++)
+			if (query->flags7 & 1<<flagi) Printf(" %s", FLAG_NAME(1<<flagi, flags7));
 		Printf("\nBounce flags: %x\nBounce factors: f:%f, w:%f", 
 			query->BounceFlags, FIXED2FLOAT(query->bouncefactor), 
 			FIXED2FLOAT(query->wallbouncefactor));
diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index 6fe5d722c..de760008f 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -1747,6 +1747,7 @@ void P_LoadThings (MapData * map)
 
 		memset (&mti[i], 0, sizeof(mti[i]));
 
+		mti[i].gravity = FRACUNIT;
 		mti[i].Conversation = 0;
 		mti[i].SkillFilter = MakeSkill(flags);
 		mti[i].ClassFilter = 0xffff;	// Doom map format doesn't have class flags so spawn for all player classes
@@ -1822,6 +1823,7 @@ void P_LoadThings2 (MapData * map)
 		mti[i].ClassFilter = (mti[i].flags & MTF_CLASS_MASK) >> MTF_CLASS_SHIFT;
 		mti[i].flags &= ~(MTF_SKILLMASK|MTF_CLASS_MASK);
 		mti[i].Conversation = 0;
+		mti[i].gravity = FRACUNIT;
 	}
 	delete[] mtp;
 }
diff --git a/src/p_things.cpp b/src/p_things.cpp
index 5d769238b..33e510a69 100644
--- a/src/p_things.cpp
+++ b/src/p_things.cpp
@@ -452,6 +452,7 @@ bool P_Thing_Raise(AActor *thing)
 	thing->flags4 = info->flags4;
 	thing->flags5 = info->flags5;
 	thing->flags6 = info->flags6;
+	thing->flags7 = info->flags7;
 	thing->health = info->health;
 	thing->target = NULL;
 	thing->lastenemy = NULL;
diff --git a/src/p_udmf.cpp b/src/p_udmf.cpp
index 91e4c8565..fc5964737 100644
--- a/src/p_udmf.cpp
+++ b/src/p_udmf.cpp
@@ -475,6 +475,7 @@ public:
 		FString arg0str, arg1str;
 
 		memset(th, 0, sizeof(*th));
+		th->gravity = FRACUNIT;
 		sc.MustGetToken('{');
 		while (!sc.CheckToken('}'))
 		{
@@ -515,6 +516,11 @@ public:
 				th->special = CheckInt(key);
 				break;
 
+			case NAME_Gravity:
+				CHECK_N(Zd | Zdt)
+				th->gravity = CheckFixed(key);
+				break;
+
 			case NAME_Arg0:
 			case NAME_Arg1:
 			case NAME_Arg2:
@@ -921,6 +927,10 @@ public:
 				Flag(ld->flags, ML_BLOCKSIGHT, key); 
 				continue;
 			
+			case NAME_blockhitscan:
+				Flag(ld->flags, ML_BLOCKHITSCAN, key); 
+				continue;
+			
 			// [Dusk] lock number
 			case NAME_Locknumber:
 				ld->locknumber = CheckInt(key);
diff --git a/src/r_segs.cpp b/src/r_segs.cpp
index d050d8c3b..4fec863ff 100644
--- a/src/r_segs.cpp
+++ b/src/r_segs.cpp
@@ -828,7 +828,7 @@ void R_RenderFakeWallRange (drawseg_t *ds, int x1, int x2)
 					{
 						if (sclipTop <= backsector->e->XFloor.lightlist[j].plane.Zat0())
 						{
-							lightlist_t *lit = &backsector->e->XFloor.lightlist[i];
+							lightlist_t *lit = &backsector->e->XFloor.lightlist[j];
 							basecolormap = lit->extra_colormap;
 							wallshade = LIGHT2SHADE(curline->sidedef->GetLightLevel(foggy, *lit->p_lightlevel, lit->lightsource == NULL) + r_actualextralight);
 							break;
diff --git a/src/thingdef/thingdef.h b/src/thingdef/thingdef.h
index 9835caa15..32cba99af 100644
--- a/src/thingdef/thingdef.h
+++ b/src/thingdef/thingdef.h
@@ -31,6 +31,7 @@ bool CheckDeprecatedFlags(const AActor *actor, PClassActor *info, int index);
 const char *GetFlagName(unsigned int flagnum, int flagoffset);
 void ModActorFlag(AActor *actor, FFlagDef *fd, bool set);
 INTBOOL CheckActorFlag(const AActor *actor, FFlagDef *fd);
+INTBOOL CheckActorFlag(const AActor *owner, const char *flagname, bool printerror = true);
 
 #define FLAG_NAME(flagnum, flagvar) GetFlagName(flagnum, myoffsetof(AActor, flagvar))
 
diff --git a/src/thingdef/thingdef_codeptr.cpp b/src/thingdef/thingdef_codeptr.cpp
index 74155ba8a..0114041f2 100644
--- a/src/thingdef/thingdef_codeptr.cpp
+++ b/src/thingdef/thingdef_codeptr.cpp
@@ -4016,30 +4016,9 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_CheckFlag)
 		return numret;
 	}
 
-	long dot = flagname.IndexOf('.');
-	FFlagDef *fd;
-	PClassActor *cls = owner->GetClass();
-
-	if (dot >= 0)
+	if (CheckActorFlag(owner, flagname))
 	{
-		FString part1(flagname.Left(dot));
-		fd = FindFlag(cls, part1, flagname.Mid(dot+1));
-	}
-	else
-	{
-		fd = FindFlag(cls, flagname, NULL);
-	}
-
-	if (fd != NULL)
-	{
-		if (CheckActorFlag(owner, fd))
-		{
-			ACTION_JUMP(jumpto);
-		}
-	}
-	else
-	{
-		Printf("Unknown flag '%s' in '%s'\n", flagname.GetChars(), cls->TypeName.GetChars());
+		ACTION_JUMP(jumpto);
 	}
 	return numret;
 }
@@ -5225,3 +5204,19 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SetDamageType)
 	self->DamageType = damagetype;
 	return 0;
 }
+
+//==========================================================================
+//
+// A_DropItem
+//
+//==========================================================================
+
+DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_DropItem)
+{
+	ACTION_PARAM_START(3);
+	ACTION_PARAM_CLASS(spawntype, 0);
+	ACTION_PARAM_INT(amount, 1);
+	ACTION_PARAM_INT(chance, 2);
+
+	P_DropItem(self, spawntype, amount, chance);
+}
diff --git a/src/thingdef/thingdef_data.cpp b/src/thingdef/thingdef_data.cpp
index bf99ee363..9b069b7ae 100644
--- a/src/thingdef/thingdef_data.cpp
+++ b/src/thingdef/thingdef_data.cpp
@@ -184,6 +184,7 @@ static FFlagDef ActorFlags[]=
 
 	DEFINE_FLAG(MF5, DONTDRAIN, AActor, flags5),
 	DEFINE_FLAG(MF5, NODROPOFF, AActor, flags5),
+	DEFINE_FLAG(MF5, NOFORWARDFALL, AActor, flags5),
 	DEFINE_FLAG(MF5, COUNTSECRET, AActor, flags5),
 	DEFINE_FLAG(MF5, NODAMAGE, AActor, flags5),
 	DEFINE_FLAG(MF5, BLOODSPLATTER, AActor, flags5),
@@ -233,6 +234,12 @@ static FFlagDef ActorFlags[]=
 	DEFINE_FLAG(MF6, DOHARMSPECIES, AActor, flags6),
 	DEFINE_FLAG(MF6, POISONALWAYS, AActor, flags6),
 	DEFINE_FLAG(MF6, NOTAUTOAIMED, AActor, flags6),
+	DEFINE_FLAG(MF6, NOTONAUTOMAP, AActor, flags6),
+	DEFINE_FLAG(MF6, RELATIVETOFLOOR, AActor, flags6),
+
+	DEFINE_FLAG(MF7, NEVERTARGET, AActor, flags7),
+	DEFINE_FLAG(MF7, NOTELESTOMP, AActor, flags7),
+	DEFINE_FLAG(MF7, ALWAYSTELEFRAG, AActor, flags7),
 
 	// Effect flags
 	DEFINE_FLAG(FX, VISIBILITYPULSE, AActor, effects),
@@ -302,6 +309,7 @@ static FFlagDef InventoryFlags[] =
 	DEFINE_FLAG(IF, RESTRICTABSOLUTELY, AInventory, ItemFlags),
 	DEFINE_FLAG(IF, NEVERRESPAWN, AInventory, ItemFlags),
 	DEFINE_FLAG(IF, NOSCREENFLASH, AInventory, ItemFlags),
+	DEFINE_FLAG(IF, TOSSED, AInventory, ItemFlags),
 
 	DEFINE_DEPRECATED_FLAG(PICKUPFLASH),
 	DEFINE_DEPRECATED_FLAG(INTERHUBSTRIP),};
diff --git a/src/thingdef/thingdef_properties.cpp b/src/thingdef/thingdef_properties.cpp
index 7472d3806..787b758a4 100644
--- a/src/thingdef/thingdef_properties.cpp
+++ b/src/thingdef/thingdef_properties.cpp
@@ -194,6 +194,33 @@ INTBOOL CheckActorFlag(const AActor *owner, FFlagDef *fd)
 #endif
 }
 
+INTBOOL CheckActorFlag(const AActor *owner, const char *flagname, bool printerror)
+{
+	const char *dot = strchr (flagname, '.');
+	FFlagDef *fd;
+	const PClass *cls = owner->GetClass();
+
+	if (dot != NULL)
+	{
+		FString part1(flagname, dot-flagname);
+		fd = FindFlag (cls, part1, dot+1);
+	}
+	else
+	{
+		fd = FindFlag (cls, flagname, NULL);
+	}
+
+	if (fd != NULL)
+	{
+		return CheckActorFlag(owner, fd);
+	}
+	else
+	{
+		if (printerror) Printf("Unknown flag '%s' in '%s'\n", flagname, cls->TypeName.GetChars());
+		return false;
+	}
+}
+
 //===========================================================================
 //
 // HandleDeprecatedFlags
@@ -1323,7 +1350,8 @@ DEFINE_PROPERTY(clearflags, 0, Actor)
 		defaults->flags3 =
 		defaults->flags4 =
 		defaults->flags5 =
-		defaults->flags6 = 0;
+		defaults->flags6 =
+		defaults->flags7 = 0;
 	defaults->flags2 &= MF2_ARGSDEFINED;	// this flag must not be cleared
 }
 
@@ -2157,9 +2185,8 @@ DEFINE_CLASS_PROPERTY_PREFIX(powerup, strength, F, Inventory)
 		I_Error("\"powerup.strength\" requires an actor of type \"Powerup\"\n");
 		return;
 	}
-	// Puts a percent value in the 0.0..1.0 range
 	PROP_FIXED_PARM(f, 0);
-	*pStrength = f / 100;
+	*pStrength = f;
 }
 
 //==========================================================================
diff --git a/src/version.h b/src/version.h
index 4a2cc0701..d7acf1e6a 100644
--- a/src/version.h
+++ b/src/version.h
@@ -76,7 +76,7 @@ const char *GetVersionString();
 
 // Use 4500 as the base git save version, since it's higher than the
 // SVN revision ever got.
-#define SAVEVER 4503
+#define SAVEVER 4504
 
 #define SAVEVERSTRINGIFY2(x) #x
 #define SAVEVERSTRINGIFY(x) SAVEVERSTRINGIFY2(x)
diff --git a/src/wi_stuff.cpp b/src/wi_stuff.cpp
index 37b418ce9..6ae9148af 100644
--- a/src/wi_stuff.cpp
+++ b/src/wi_stuff.cpp
@@ -1947,7 +1947,7 @@ void WI_Ticker(void)
 		if (level.info->InterMusic.IsNotEmpty()) 
 			S_ChangeMusic(level.info->InterMusic, level.info->intermusicorder);
 		else
-			S_ChangeMusic (gameinfo.intermissionMusic.GetChars()); 
+			S_ChangeMusic (gameinfo.intermissionMusic.GetChars(), gameinfo.intermissionOrder); 
 
 	}
 	
diff --git a/wadsrc/static/actors/actor.txt b/wadsrc/static/actors/actor.txt
index ade730ee7..395a8a602 100644
--- a/wadsrc/static/actors/actor.txt
+++ b/wadsrc/static/actors/actor.txt
@@ -300,6 +300,7 @@ ACTOR Actor native //: Thinker
 	action native A_Quake(int intensity, int duration, int damrad, int tremrad, sound sfx = "world/quake");
 	action native A_SetTics(int tics);
 	action native A_SetDamageType(name damagetype);
+	action native A_DropItem(class<Actor> item, int dropamount = -1, int chance = 256);
 
 	action native A_CheckSightOrRange(float distance, state label);
 	action native A_CheckRange(float distance, state label);
diff --git a/wadsrc/static/actors/shared/inventory.txt b/wadsrc/static/actors/shared/inventory.txt
index 9bd936a6e..7ca7a058a 100644
--- a/wadsrc/static/actors/shared/inventory.txt
+++ b/wadsrc/static/actors/shared/inventory.txt
@@ -300,6 +300,7 @@ ACTOR PowerDrain : Powerup native
 ACTOR PowerRegeneration : Powerup native
 {
 	Powerup.Duration -120
+	Powerup.Strength 5
 }
 
 ACTOR PowerHighJump : Powerup native {}
diff --git a/wadsrc/static/actors/strife/alienspectres.txt b/wadsrc/static/actors/strife/alienspectres.txt
index bdd30d8e4..6e56f680d 100644
--- a/wadsrc/static/actors/strife/alienspectres.txt
+++ b/wadsrc/static/actors/strife/alienspectres.txt
@@ -20,6 +20,7 @@ ACTOR AlienSpectre1 : SpectralMonster 129
 	PainSound "alienspectre/pain"
 	DeathSound "alienspectre/death"
 	ActiveSound "alienspectre/active"
+	Obituary "$OB_ALIENSPECTRE"
 	+NOGRAVITY
 	+FLOAT
 	+SHADOW
diff --git a/wadsrc/static/language.enu b/wadsrc/static/language.enu
index 8a0a5f4ee..5695ad502 100644
--- a/wadsrc/static/language.enu
+++ b/wadsrc/static/language.enu
@@ -736,7 +736,7 @@ OB_MACIL = "%o should have never rebelled against Macil.";
 OB_REBEL = "%o was gunned down by a Rebel.";
 OB_BEGGAR = "%o was beaten to death by the poor.";
 OB_PEASANT = "%o should have never picked a fight with a civilian.";
-OB_ALIENSPECTE = "%o was struck down by the Spectre.";
+OB_ALIENSPECTRE = "%o was struck down by the Spectre.";
 OB_ENTITY = "%o felt the wrath of The One God.";
 OB_LOREMASTER = "%o couldn't escape from the Lore Master's grasp.";
 OB_PROGRAMMER = "%o was deleted by the Programmer.";
diff --git a/wadsrc/static/language.fr b/wadsrc/static/language.fr
index 354ba2bee..1533a1506 100644
--- a/wadsrc/static/language.fr
+++ b/wadsrc/static/language.fr
@@ -779,7 +779,7 @@ OB_MACIL = "%o n'aurait jamais du se rebelle contre Macil.";
 OB_REBEL = "%o a ete abbatu par un Rebel.";
 OB_BEGGAR = "%o a ete battu a mort par un pauvre.";
 OB_PEASANT = "%o n'aurait jamais du chercher la bagarre a un civil.";
-OB_ALIENSPECTE = "%o a ete terrasse par le Spectre.";
+OB_ALIENSPECTRE = "%o a ete terrasse par le Spectre.";
 OB_ENTITY = "%o a senti le courroux du dieu unique.";
 OB_LOREMASTER = "%o n'a pu echapper a l'emprise du Maitre des Traditions.";
 OB_PROGRAMMER = "%o a ete efface par le Programmer.";
diff --git a/wadsrc/static/language.ptb b/wadsrc/static/language.ptb
index 1dc0e36c0..9f7cc4e11 100644
--- a/wadsrc/static/language.ptb
+++ b/wadsrc/static/language.ptb
@@ -712,7 +712,7 @@ OB_MACIL = "%o should have never rebelled against Macil.";
 OB_REBEL = "%o was gunned down by a Rebel.";
 OB_BEGGAR = "%o was beaten to death by the poor.";
 OB_PEASANT = "%o should have never picked a fight with a civilian.";
-OB_ALIENSPECTE = "%o was struck down by the Spectre.";
+OB_ALIENSPECTRE = "%o was struck down by the Spectre.";
 OB_ENTITY = "%o felt the wrath of The One God.";
 OB_LOREMASTER = "%o couldn't escape from the Lore Master's grasp.";
 OB_PROGRAMMER = "%o was deleted by the Programmer.";
diff --git a/wadsrc/static/menudef.txt b/wadsrc/static/menudef.txt
index b2a46469a..6457051bf 100644
--- a/wadsrc/static/menudef.txt
+++ b/wadsrc/static/menudef.txt
@@ -1019,6 +1019,7 @@ OptionMenu MapColorMenu
 	ColorPicker "Secret walls",					"am_secretwallcolor"	
 	ColorPicker "Actors",						"am_thingcolor"		
 	ColorPicker "Monsters",						"am_thingcolor_monster"		
+	ColorPicker "non-counting Monsters",		"am_thingcolor_ncmonster"		
 	ColorPicker "Friends",						"am_thingcolor_friend"		
 	ColorPicker "Items",						"am_thingcolor_item"			
 	ColorPicker "Count Items",					"am_thingcolor_citem"			
@@ -1041,6 +1042,7 @@ OptionMenu MapColorMenu
 	ColorPicker "Secret walls",					"am_ovsecretwallcolor"	
 	ColorPicker "Actors",						"am_ovthingcolor"		
 	ColorPicker "Monsters",						"am_ovthingcolor_monster"		
+	ColorPicker "non-counting Monsters",		"am_ovthingcolor_ncmonster"		
 	ColorPicker "Friends",						"am_ovthingcolor_friend"		
 	ColorPicker "Items",						"am_ovthingcolor_item"		
 	ColorPicker "Count Items",					"am_ovthingcolor_citem"