Teenage Mutant Ninja Turtles: Turtles in Time, released as Teenage Mutant Hero Turtles: Turtles in Time in Europe, is a beat 'em up arcade video game produced by Konami and released in 1991. A sequel to the original Teenage Mutant Ninja Turtles arcade game, it is a scrolling beat 'em up type game based mainly on the 1987 TMNT animated series. Originally an arcade game, Turtles in Time was ported to the Super Nintendo Entertainment System in 1992 under the title Teenage Mutant Ninja Turtles IV: Turtles in Time, continuing the numbering from the earlier Turtles games released on the original NES. That same year, a game that borrowed many elements, Teenage Mutant Ninja Turtles: The Hyperstone Heist, was released for the Sega Genesis.