Katana ZERO is a 2019 neo-noir action platformer developed by Askiisoft and published by Devolver Digital. It follows Subject Zero, a katana-wielding assassin taking on deadly contracts in a dystopian city while uncovering his fractured past. The game blends one-hit-kill combat, time manipulation, fast movement, and dialogue-driven storytelling, creating a stylish mix of precision action and narrative mystery. It is widely praised for its pixel art, soundtrack, and sharp, replayable level design.