This is the very old dungeon game "The Gateway to Aphsai". There is a sequel 
called "The Temple of Aphsai", but I only have the copy-protected original 
and so I can't make a working .d64 file. Somebody has requested for.
 Because the C64S emulator have a bug in the sprite collision handling, the 
game is not fully emulated. For instance, you can go through walls and locked 
doors.
 If anybody (especially Mike!) have a solution, please post a file in watson 
or the comp.emulators.cbm newsgroup.