Super Smash Flash 2 is a crossover fighting game based on Nintendo's Super Smash Bros. series. Much of the same gameplay is carried over, in which players must knock each other off-screen by accumulating damage with their attacks. Many Nintendo characters are featured alongside third-party characters such as Lloyd Irving and Black Mage, as well as anime characters such as Goku and Luffy. Up to four players can play together on the same device or online, and various single-player game modes are included.