The Revenge of Shinobi - Bonuses

Bonuses

A variety of bonus crates can be found in each level, some hidden in the scenery. These include simple power-ups such as extra shuriken or health packs, as well as special items to gain lives or extra ninpo attacks. Besides power-ups, some crates may contain time bombs: explosives that detonate when their fuse runs out or if Musashi comes too close (though he can walk out of the blast radius if the player is quick enough).

The game is divided into four difficulties. As difficulty increases, more enemies appear per stage; on Hardest, Musashi takes twice as much damage and the amount of starting lives decreases from 10 to 1. From the options menu, the player can also choose the amount of starting shuriken from 0 to 90 (though a technique does exist that allows infinite shuriken).