Clash at Demonhead is a non-linear platform game for the Nintendo Entertainment System. The player assumes the role of Billy Big Bang Blitz, navigating through various levels while running, jumping, and shooting. Equipped initially with a handgun, players can acquire upgrades and abilities such as shrinking, teleportation, and flight by collecting Force. The game's expansive world map features over forty routes, requiring players to meet specific objectives to progress.
Clash at Demonhead is an open-ended platformer. The player takes control of Billy "Big Bang" Blitz, who is capable of running, jumping, and shooting. He is initially armed with a handgun, though various upgrades can be purchased from a shop. He later gains the ability to perform various powers by collecting Force, including shrinking, teleportation to previously-visited areas, flight, healing, and invincibility. The player chooses levels from a world map that consists of over forty routes. Various objectives must be met to complete the game.