A prototype sample of Ninja Hattori-kun for the Famicom. There are minor differences in the game and those include a different color on the menu arrow, the sky color remaining blue in every stage, and no health recovery after beating a stage. This seems to have been used for review in a magazine or the build which was used to take photos for the manual of the game. A single rectangular label across the top of the cartridge calls it “Ninja Hattori-kun Invincible Version”.
Ninja Hattori-kun (Prototype, Famicom)
