Five levels, twenty screens each, and a name from the list waiting at the end of every one. Swing the ropes, clear the pits, cut down the Crazy 88.
Each level is twenty screens built the way Pitfall! built its jungle, from an 8-bit shift register, so every run is the same map. Swing the wide pits, time the shifting tar, hop the ninja heads in the blood pool, jump the sake barrels, duck or deflect the shuriken. Then the boss: Vernita Green, Gogo Yubari, O-Ren Ishii, Pai Mei, and Bill. Watch for the red mark over their heads before they strike. The last screen before every boss has a 1UP on it, and beating a boss gives you another. Ninjas die in one cut, and so do you.