Dangerous Dave in the Haunted Mansion is a platforming game for DOS computers and the sequel to Dangerous Dave. It was developed using the game engine id Software created for Shadow Knights, which introduces smoother screen scrolling, ranged weapons that can be aimed up or down, and improved graphics. The story involves Dave's brother Delbert, who gets himself trapped in a haunted mansion full of typical monsters such as ghosts, zombies, and moving ectoplasm. Armed with nothing but a shotgun full of infinite ammo, Dave gets dangerous in his quest to save his brother.

In this run, Dimon12321 defeats what appears to be a powerful spirit and reunites Dave with Delbert in record time.