Sega Master System Cheats - Ninja Gaiden

Cheat mode:

Hold Down on controller two + hold Up on controller one, then hold 1 + 2 on controllers one and two at the main menu, while "Press Start" is blinking.

Unlimited force:

Enter MFREE

Invincibility:

Enter NOCIDE

View credits:

Enter MONTY

View ending:

Enter AKUSX

Level passwords:

Level --- Password

1 --- LEGND

2 --- NINJA

3 --- GIDEN

4 --- DRGON

5 --- SWORD