diff --git a/src/compatibility.cpp b/src/compatibility.cpp
index 25bf0f5d35..f145b5ad95 100644
--- a/src/compatibility.cpp
+++ b/src/compatibility.cpp
@@ -77,7 +77,9 @@ enum
 	CP_SETFLAGS,
 	CP_SETSPECIAL,
 	CP_CLEARSPECIAL,
-	CP_SETACTIVATION
+	CP_SETACTIVATION,
+	CP_SECTORFLOOROFFSET,
+	CP_SETWALLYSCALE,
 };
 
 // EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
@@ -137,6 +139,16 @@ static FCompatOption Options[] =
 	{ NULL, 0, 0 }
 };
 
+static const char *const LineSides[] =
+{
+	"Front", "Back", NULL
+};
+
+static const char *const WallTiers[] =
+{
+	"Top", "Mid", "Bot", NULL
+};
+
 static TArray<int> CompatParams;
 static int ii_compatparams;
 
@@ -259,6 +271,28 @@ void ParseCompatibility()
 				sc.MustGetNumber();
 				CompatParams.Push(sc.Number);
 			}
+			else if (sc.Compare("sectorflooroffset"))
+			{
+				if (flags.ExtCommandIndex == ~0u) flags.ExtCommandIndex = CompatParams.Size();
+				CompatParams.Push(CP_SECTORFLOOROFFSET);
+				sc.MustGetNumber();
+				CompatParams.Push(sc.Number);
+				sc.MustGetFloat();
+				CompatParams.Push(FLOAT2FIXED(sc.Float));
+			}
+			else if (sc.Compare("setwallyscale"))
+			{
+				if (flags.ExtCommandIndex == ~0u) flags.ExtCommandIndex = CompatParams.Size();
+				CompatParams.Push(CP_SETWALLYSCALE);
+				sc.MustGetNumber();
+				CompatParams.Push(sc.Number);
+				sc.MustGetString();
+				CompatParams.Push(sc.MustMatchString(LineSides));
+				sc.MustGetString();
+				CompatParams.Push(sc.MustMatchString(WallTiers));
+				sc.MustGetFloat();
+				CompatParams.Push(FLOAT2FIXED(sc.Float));
+			}
 			else 
 			{
 				sc.UnGet();
@@ -438,6 +472,30 @@ void SetCompatibilityParams()
 					i += 3;
 					break;
 				}
+				case CP_SECTORFLOOROFFSET:
+				{
+					if (CompatParams[i+1] < numsectors)
+					{
+						sector_t *sec = &sectors[CompatParams[i+1]];
+						sec->floorplane.ChangeHeight(CompatParams[i+2]);
+						sec->ChangePlaneTexZ(sector_t::floor, CompatParams[i+2]);
+					}
+					i += 3;
+					break;
+				}
+				case CP_SETWALLYSCALE:
+				{
+					if (CompatParams[i+1] < numlines)
+					{
+						side_t *side = lines[CompatParams[i+1]].sidedef[CompatParams[i+2]];
+						if (side != NULL)
+						{
+							side->SetTextureYScale(CompatParams[i+3], CompatParams[i+4]);
+						}
+					}
+					i += 5;
+					break;
+				}
 			}
 		}
 	}
diff --git a/wadsrc/static/compatibility.txt b/wadsrc/static/compatibility.txt
index d87f593f08..f381155bd4 100644
--- a/wadsrc/static/compatibility.txt
+++ b/wadsrc/static/compatibility.txt
@@ -301,3 +301,32 @@ F481922F4881F74760F3C0437FD5EDD0 // map03
 	setlineflags 455 0x200		// repeatable
 	setactivation 455 16		// SPAC_Push
 }
+
+6DC9F6CCEAE7A91AEC48EBE506F22BC4 // Void
+{
+	// Slightly squash the pillars in the starting room with "stimpacks"
+	// floating on them so that they can be obtained.
+	sectorflooroffset 62 -8
+	setwallyscale 286 front bot 1.090909
+	setwallyscale 287 front bot 1.090909
+	setwallyscale 288 front bot 1.090909
+	setwallyscale 289 front bot 1.090909
+	
+	sectorflooroffset 63 -8
+	setwallyscale 290 front bot 1.090909
+	setwallyscale 291 front bot 1.090909
+	setwallyscale 292 front bot 1.090909
+	setwallyscale 293 front bot 1.090909
+	
+	sectorflooroffset 118 -8
+	setwallyscale 710 front bot 1.090909
+	setwallyscale 711 front bot 1.090909
+	setwallyscale 712 front bot 1.090909
+	setwallyscale 713 front bot 1.090909
+	
+	sectorflooroffset 119 -8
+	setwallyscale 714 front bot 1.090909
+	setwallyscale 715 front bot 1.090909
+	setwallyscale 716 front bot 1.090909
+	setwallyscale 717 front bot 1.090909
+}