DEATH JR. follows the exploits of the Grim Reaper's son, known to friends as DJ. On a field trip to a museum, DJ helps his school crush, Pandora, open a locked box in the basement. And all hell breaks loose, literally: Demons pour from the opened package, ensnaring his friends in otherworldly tentacles. Players control DJ as he travels through different levels in search of the items that will release his friends.
Employing a flamethrower, shotgun, freeze gun, and other firearms, DJ battles a bevy of beasties. His scythe is also a weapon, but can be used to swing across chasms, momentarily fly, or jump higher than his bony legs could usually carry him. DJ must navigate creative and detailed levels such as Meat World (outfitted with barbeque-themed hazards and gigantic cows), School (with exploding vending machines, a smoky teacher's lounge), and Suburbia (complete with white picket fences and exploding sewers).