You must fight hordes of zombies and undead! Use your cool ninja fighting techniques to kill them all. The zombies are fast and will finish you fast if you are not carefull. Allways try to stay away from them. Use sidekick or katana sword to stun them.
Use arrow keys to move the ninja. Press spacebar to attack. Use different combinations to perform different cool attacks like sword slash, tripple shuriken, teleportation and self ignition (read the hints in game description).