The Endless Dungeon is a supplement for fantasy role-playing games published by Wee Warriors in 1977.
[1] When players cut the hallways apart, they were to fold the walls upwards on either side of the hall, resulting in a three-dimensional U-shaped structure sized for 25 mm metal miniatures that was supposed to look like a hallway floor with walls on either side.
[2] Wee Warriors was founded by Pete and Judith Kerestan in 1975 to take advantage of the popularity of TSR's new fantasy role-playing game Dungeons & Dragons by producing accessories for the game.
[3] Game historian Shannon Appelcline noted in his 2014 book Designers & Dragons that initially Wee Warriors supplements were sold out of the trunk of Pete Kerestan's car, but in 1976 TSR picked them up for exclusive distribution: "Four of the first Wee Warriors products got more widely sold in this manner: The Character Archaic (1975), Palace of the Vampire Queen (1976), The Dwarven Glory (1977), and The Endless Dungeon (1977).
"[4]: 28 In the April–May 1978 edition of White Dwarf (Issue #6), Don Turnbull was not impressed with the production values of this accessory, stating "the Endless Dungeon pack gives the impression of having been thrown together.