Maru's MISSION is a side-scrolling action game that follows the story of Maru, who finds himself in the middle of a mysterious encounter with a strange-looking guy and his friend Cori in Central Park. The two vanish without a trace, leaving Maru confused and alone.
The gameplay revolves around Maru's journey as he travels through various locations, including the USA and Romania, to battle mythological monsters like Isis and Dracula. Along the way, he can shoot sparks rapidly, acquire powerful weapons, collect hearts to restore health, and jump over obstacles or dodge enemies. Completing levels often involves defeating a level boss, which may reward Maru with new weapons.