Return Of The Ninja Level select
Enter ” 2PQQ651 4P43ZQZ 0ZSD ” as a password. Note: Enter ” 5TKWFDT 7VFY0M1 H1NT ” as a password to access the ending.
Note: You must have a 2.1 or higher version of the Game Shark to use these codes in a Game Boy Color system.
| Infinite Health | 910F5CC8 |
| Invisible | 910632CB |
| Always Have Max Throw | 91805ACA |
| Have Power Flame | 910100CB |
| Have Iron Claw | 910160C8 |
| Have Tabi | 910161C8 |
| Have Ninja Sandals | 910162C8 |
| Have Kabuto | 910163C8 |
| Have Mantle | 910164C8 |
| Have Mizugumo | 910165C8 |