Ninja Spirit (TurboGrafx-16)

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Level Select#

At the title screen, press II, I, II, II, I, II, then hold Select and press Run to replace the sound test in the main menu with a level select. Press I to toggle the level to play, from 1 to 3. Levels 4-6 can be selected by additionally holding Select+Run.

Developer Messages#

Mr. Heli#

At the title screen, press I, II, II, I, Select, Run to replace the sound test in the main menu with a message asking the player if they have played Mr. Heli No Daibouken, another TG16 game made by Irem. The code itself is also a reference to Mr. Heli, in which it's used to get extra credits.

Strangely, the code and message are present in the US version, despite the fact Mr. Heli was never released on the TG16 in America.

Thank You#

At the title screen, press II, I, I, II, Select, Run to replace the sound test in the main menu with a thank you message.