Ninja Spirit is a side-scrolling action game played across a sequence of fixed stages. The objective is to move from left to right, defeat enemies, avoid traps, and overcome a boss at the end of each area.

The ninja can attack with a sword, throw shuriken, and use bombs or other limited weapons depending on the control setup. Players can jump, crouch, and change position while dealing with enemies approaching from several directions. Power-ups improve weapons or create temporary ninja duplicates, and losing all lives ends the game.

Learn enemy positions rather than rushing through every screen. Keep moving when groups surround you, and use the sword at close range while reserving ranged attacks for enemies that are difficult to approach.

Watch the terrain and boss patterns carefully. Temporary duplicates and weapon power-ups are valuable for difficult sections, but they do not replace careful positioning; avoid wasting limited attacks on ordinary enemies when a safe sword strike is available.