Gary Gygax games

wargame which was the precursor to Dungeons & Dragons

Dungeon! is an adventure board game designed by David R. Megarry and first released by TSR, Inc. in 1975. Additional contributions through multiple editions were made by Gary Gygax, Steve Winter, Jeff Grubb, Chris Dupuis and Michael Gray. Dungeon! simulates some aspects of the Dungeons & Dragons (D&D) role-playing game, which was released in 1974, although Megarry had a prototype of Dungeon! ready as early as 1972.