Revenge of the Ninja Cheats For Sega CD

1. Various Cheats...

   Enter these at the Title Screen while Game Start is showing. A sound will be heard if the code was entered correctly.

   Effect	Effect
   Right, Left, Right, Left, Down, Down, Up, Up	320x224 Resolution Mode
   Up, Down, Left, Left	Clean Pause Screen
   Left, Right, Right, Up	Debug Mode (unknown effect)
   Right, Right, Down, Up	End Pause (unknown effect)
   Left, Down, Left, Right, Up, Down, Left, Down	Game Will Self-Play
   Right, Left, Down, Up, Up, Down, Left, Right	Infinite Lives
   LDLRUDLD	Muteki
   Down, Left, Up, Right, Up, Right, Down, Left	Stage Select (start the game to select stages)

   Contributed by: Mezmorize99 

2. Level Skip

   At the main menu, press: Down, Down, Right, Up. A sound will be heard. Then, while playing, pause the game and press C to automatically finish the level, or press B to lose the level.

   Effect	Effect
   At the Start Game screen hit: up, right down, down, right, up. To enable, pause the game and press A to go to the next level	Level Skip

   Contributed by: expensivegift 

3. Test mode

   Enter this at the Start Game Screen

   Effect	Effect
   Right, Left, Up, Down, Right, Left, Up	Test mode where you can view all the cinematics

   Contributed by: Arguro 

4. Unlock Sound Test

   At the main menu, press: Right, Down, Up, Left, Down, Up. A sound will be heard if done correctly. You'll find the sound test at the bottom of the options menu.

   Effect	Effect
   During the Start Game screen press: Right, Down, Up, Left, Down, Up	Unlock Sound Test

   Contributed by: expensivegift