Deathtrap Dungeon is a fantasy adventure taking place in a hazardous labyrinth in the city of Fang. The player takes the role of an adventurer who decides to enter Baron Sukumvit's "Trial of Champions" and brave "Deathtrap Dungeon". Competing against five other adventurers, the player must defeat monsters, navigate the maze of dungeons and collect certain gems, which are the key to escaping and winning the Trial.