M.U.G.E.N. is a popular fighting game engine that has been used to create numerous fan-made games, including M.U.G.E.N. - Naruto Shippuden: Lucha Ninja EXTREME. This game is an unofficial fighting game featuring characters from the Naruto Shippuden series, pitted against each other in a tournament-style competition. The game promises an extreme fighting experience, capitalizing on the intense ninja battles characteristic of the Naruto series.