The Slayer's Guide to Demons
Mongoose Publishing
Call of Cthulhu
2nd Edition
Riddle Rooms #1. Dungeon Dilemmas
Unknown
Verbena (1994)
Acr7.tmp
Book of Challenges: Dungeon Rooms, Puzzles, and Traps
Daniel Kaufman
Planar Handbook
Bruce R. Cordell & Gwendolyn F.M. Kestrel