Teenage Mutant Ninja Turtles is a beat 'em up video game released in 2003 by Konami. The game is based on the 2003 TV series. The main gameplay loosely adapts the following season one episodes: Things Change, A Better Mouse Trap, Attack of the Mousers, Meet Casey Jones, Nano, Darkness on the Edge of Town, The Way of Invisibility, Notes From the Underground (Parts 1-3), and Return to New York (Parts 1-3), as well as a level that does not come from the animated series at all.
The player can play as either Leonardo, Donatello, Michelangelo or Raphael. There is a story mode for one or two players, and there is also a versus mode where two players can fight head to head. In the versus mode, players can fight as all 4 turtles, Splinter, Casey Jones, Hamato Yoshi, The Turtlebot, Hun, Oroku Saki, and Shredder. A Challenge mode is unlockable by defeating Oroku Saki with any Turtle in the Story Mode.