Deep beneath the keep of Castle Greyhawk, something is causing all these gross, mutated and unpleasant monsters to run wild throughout the castle and the 12-level dungeon beneath it. The call has gone out for heroic, fearless and kinda foolish adventurers to out-hack, out-slash, and (rarely) out-think hordes of ridiculous monsters, from misfit monsters to really bad dead things to the tarrasque.
