diff --git a/wadsrc/static/zscript/razebase.zs b/wadsrc/static/zscript/razebase.zs
index 3dc64c532..104ea1aa5 100644
--- a/wadsrc/static/zscript/razebase.zs
+++ b/wadsrc/static/zscript/razebase.zs
@@ -19,6 +19,10 @@ enum EGameType
 	GAMEFLAG_PSEXHUMED  = GAMEFLAG_POWERSLAVE | GAMEFLAG_EXHUMED,	// the two games really are the same, except for the name and the publisher.
 	GAMEFLAG_WORLDTOUR = 0x00008000,
 	GAMEFLAG_DUKEDC = 0x00010000,
+	GAMEFLAG_DUKECOMPAT = GAMEFLAG_DUKE | GAMEFLAG_NAM | GAMEFLAG_NAPALM | GAMEFLAG_WW2GI | GAMEFLAG_RRALL,
+	GAMEFLAG_WH			= 0x00020000,
+	GAMEFLAG_WH2		= 0x00040000,
+	GAMEFLAG_WHALL      = GAMEFLAG_WH | GAMEFLAG_WH2,
 	GAMEFLAGMASK        = 0x0000FFFF, // flags allowed from grpinfo
 
 	// We still need these for the parsers.