This game is also available on PS1.
Retro Game Cheats for Blade (Gameboy)
Effect: Unlock Level 5
Effect: View Ending Sequence
When:
Password Screen
How:
Enter 9?!1N?BKT?51G
Submitted By:
Unknown
Effect: Unlock Level 6
Effect: Level 2
Effect: Unlock Level 7
Effect: Hidden sequence
When:
During the game
How:
Wait until the credits have completed to watch a special hidden sequence
Submitted By:
Effect: Level 3
Effect: Level 4