Castle Wolfenstein on the Commodore 64 is a top-down World War II stealth-action game where you play an Allied prisoner escaping a Nazi stronghold, ideally grabbing secret war plans before you get out. You start in a random cell with only a pistol and grenades given to you by a dying inmate, then sneak or fight your way through a procedurally generated maze of about 60 rooms patrolled by guards and tougher SS stormtroopers. You can shoot enemies, hold them at gunpoint to make them surrender, loot their bodies for ammo, grenades, and keys, and open chests that may contain uniforms (for disguise), bulletproof vests, or the vital documents—but opening containers and moving between disk-loaded rooms is slow and risky, since noisy gunfire or grenades attract more troops. The combination of randomized castle layouts, disguises, limited resources, and emphasis on evasion over brute force makes it one of the earliest and most influential proto–stealth games on the C64.