Sneaky Ninja is a 2D stealth platformer halfway between Mario and Mark of the Ninja

For a hundred years, a small Ninja village has lived peacefully in the forest of Udon Groves, protected from the warring Samurai army by the magic of the spirits. One day, the spirits' magic mysteriously begins to fade and the Samurai invade the Ninja's home! Join Taro and his fellow ninja on their dangerous journey to restore power to the spirits before the Samurai can wipe out the Ninja once and for all!