- Blood may not abort on a bogus start position.

There seem to be ways to override it elsewhere.
The initial position gets used by some code, so it still needs to be validated, though.

source/games/blood/src/db.cpp

@@ -671,7 +671,7 @@ void dbLoadMap(const char* pPath, int* pX, int* pY, int* pZ, short* pAngle, int*
 	sectionGeometry.SetSize(sections.Size());
 	wallbackup = wall;
 	sectorbackup = sector;
-	validateStartSector(mapname.GetChars(), { *pX, *pY, *pZ }, cursectnum, mapHeader.numsectors, gModernMap);
+	validateStartSector(mapname.GetChars(), { *pX, *pY, *pZ }, cursectnum, mapHeader.numsectors, true);
 }