You might want to rent this one first.
If you've watched the TV show you'll know what this game is all about. Fight, fight, then fight some more. After you've knocked down all the enemies and proceed you'll find more coming then after a long time you'll encounter the boss, if the level has one. Then later on, you form the Megazord and have to defeat the bigger version of the boss. I liked that part. Other than that, the gameplay gets repetitive and you'll be bored of it soon. This one is similar to the old TMNT arcade games.
If you want to try it out, rent it first.