MacNinja is a single-player action and fighting game in which players control a ninja character navigating through various levels to defeat enemies and overcome obstacles. In this game, the storyline is set in a stylized, pixelated version of feudal Japan where the ninja must complete missions to restore peace and justice. It stands out with its unique development background, being written and drawn in Forth, and offers a classic arcade-style experience with challenging combat sequences and platforming elements, emphasizing quick reflexes and strategic movement.