Teenage Mutant Ninja Turtles II: The Arcade Game, also known as just Teenage Mutant Ninja Turtles in the arcade, is a game released for arcades and the Nintendo Entertainment System, based on the popular television animated series Teenage Mutant Ninja Turtles. It was developed by Konami and published by Ultra. It was originally released as a coin-op arcade game, but later ported to the NES with two extra levels. It is the sequel to Teenage Mutant Ninja Turtles but is entirely a side-scrolling "beat 'em up" game, whereas the first game was an action-adventure game. The arcade version of the game is unlockable in the GameCube version of Teenage Mutant Ninja Turtles 2: Battle Nexus from 2004, but with all the original music replaced. Both versions were included in Teenage Mutant Ninja Turtles: The Cowabunga Collection.