City Showdown TMNT is an amazing ninja game. Help the TMNT members Raph, Donnie, Leo, and Mikey fight off the bad guys and protect Manhattan in this turn based strategy game. City Showdown TMNT is based on the new 2D-animated television series. So it is called Rise of the Teenage Mutant Ninja Turtles that you can watch on Nickelodeon TV channel. The game follows the Turtles battling their foes on throughout Manhattan/New York City. When completing three stages, a bonus level to the Hidden City is unlocked to play.