diff --git a/src/g_level.cpp b/src/g_level.cpp
index 761ea4f48..713847b05 100644
--- a/src/g_level.cpp
+++ b/src/g_level.cpp
@@ -1287,6 +1287,7 @@ void G_InitLevelLocals ()
 	level.teamdamage = teamdamage;
 	level.flags = 0;
 	level.flags2 = 0;
+	level.flags3 = 0;
 
 	info = FindLevelInfo (level.MapName);
 
@@ -1340,6 +1341,7 @@ void G_InitLevelLocals ()
 	level.clusterflags = clus ? clus->flags : 0;
 	level.flags |= info->flags;
 	level.flags2 |= info->flags2;
+	level.flags3 |= info->flags3;
 	level.levelnum = info->levelnum;
 	level.Music = info->Music;
 	level.musicorder = info->musicorder;
diff --git a/src/g_level.h b/src/g_level.h
index 8e78361d2..6e07b0c74 100644
--- a/src/g_level.h
+++ b/src/g_level.h
@@ -216,6 +216,9 @@ enum ELevelFlags
 	LEVEL2_ENDGAME				= 0x20000000,	// This is an epilogue level that cannot be quit.
 	LEVEL2_NOAUTOSAVEHINT		= 0x40000000,	// tell the game that an autosave for this level does not need to be kept
 	LEVEL2_FORGETSTATE			= 0x80000000,	// forget this map's state in a hub
+	
+	// More flags!
+	LEVEL3_FORCEFAKECONTRAST	= 0x00000001,	// forces fake contrast even with fog enabled
 };
 
 
@@ -285,6 +288,8 @@ struct level_info_t
 	int			sucktime;
 	DWORD		flags;
 	DWORD		flags2;
+	DWORD		flags3;
+
 	FString		Music;
 	FString		LevelName;
 	SBYTE		WallVertLight, WallHorizLight;
@@ -398,6 +403,7 @@ struct FLevelLocals
 
 	DWORD		flags;
 	DWORD		flags2;
+	DWORD		flags3;
 
 	DWORD		fadeto;					// The color the palette fades to (usually black)
 	DWORD		outsidefog;				// The fog for sectors with sky ceilings
diff --git a/src/g_mapinfo.cpp b/src/g_mapinfo.cpp
index b68408237..c44f81ab2 100644
--- a/src/g_mapinfo.cpp
+++ b/src/g_mapinfo.cpp
@@ -1190,6 +1190,9 @@ enum EMIType
 	MITYPE_SETFLAG2,
 	MITYPE_CLRFLAG2,
 	MITYPE_SCFLAGS2,
+	MITYPE_SETFLAG3,
+	MITYPE_CLRFLAG3,
+	MITYPE_SCFLAGS3,
 	MITYPE_COMPATFLAG,
 };
 
@@ -1275,6 +1278,7 @@ MapFlagHandlers[] =
 	{ "rememberstate",					MITYPE_CLRFLAG2,	LEVEL2_FORGETSTATE, 0 },
 	{ "unfreezesingleplayerconversations",MITYPE_SETFLAG2,	LEVEL2_CONV_SINGLE_UNFREEZE, 0 },
 	{ "spawnwithweaponraised",			MITYPE_SETFLAG2,	LEVEL2_PRERAISEWEAPON, 0 },
+	{ "forcefakecontrast",				MITYPE_SETFLAG3,	LEVEL3_FORCEFAKECONTRAST, 0 },
 	{ "nobotnodes",						MITYPE_IGNORE,	0, 0 },		// Skulltag option: nobotnodes
 	{ "compat_shorttex",				MITYPE_COMPATFLAG, COMPATF_SHORTTEX, 0 },
 	{ "compat_stairs",					MITYPE_COMPATFLAG, COMPATF_STAIRINDEX, 0 },
@@ -1372,6 +1376,20 @@ void FMapInfoParser::ParseMapDefinition(level_info_t &info)
 				info.flags2 = (info.flags2 & handler->data2) | handler->data1;
 				break;
 
+			case MITYPE_SETFLAG3:
+				info.flags3 |= handler->data1;
+				info.flags3 |= handler->data2;
+				break;
+
+			case MITYPE_CLRFLAG3:
+				info.flags3 &= ~handler->data1;
+				info.flags3 |= handler->data2;
+				break;
+
+			case MITYPE_SCFLAGS3:
+				info.flags3 = (info.flags3 & handler->data2) | handler->data1;
+				break;
+
 			case MITYPE_COMPATFLAG:
 			{
 				int set = 1;
diff --git a/src/p_sectors.cpp b/src/p_sectors.cpp
index 699350839..904c76c1b 100644
--- a/src/p_sectors.cpp
+++ b/src/p_sectors.cpp
@@ -965,7 +965,7 @@ int side_t::GetLightLevel (bool foggy, int baselight, bool noabsolute, int *pfak
 		*pfakecontrast = 0;
 	}
 
-	if (!foggy) // Don't do relative lighting in foggy sectors
+	if (!foggy || level.flags3 & LEVEL3_FORCEFAKECONTRAST) // Don't do relative lighting in foggy sectors
 	{
 		if (!(Flags & WALLF_NOFAKECONTRAST) && r_fakecontrast != 0)
 		{