Labyrinth (Acid Dimension):

1-D4 checks / 24 hours of hallway or tunnel: Roll 1-D20 -- Roll needed for encounter: 16+
1 check / chamber or room: Roll 1-D20 -- Roll needed for encounter: 4+

 

%Roll: Encounter types:
01-10: Animated
11-15: Bat
16-25:   Cat, Spell
26-30: Character G.M.: Pre-make all NPC character encounters.
31-35: Dragon, Acid
36-50: Dragonman, Acid
51-65: Gargoyle, Acid
66-70: Hydra, Acid
71-72: Jahtha
73-74: Jahthein
75-76: Race
77-88: Wolf, Acid
89-00: Wyrm, Acid