Teenage Mutant Ninja Turtles: Smash Up is generally pretty solid overall, but it lacks the variety and replay value of something like the Smash Brothers series, which hurts it in the long run. The story is acceptable, there are plenty of game modes to work with, the visuals are mostly pretty, and the audio is quite good. The gameplay is solid and at times better than that of Nintendo's inspiring franchise, the game offers online and offline multiplayer, and there are a decent amount of things to unlock for fans of the game style and the franchise. However, the game lacks in variety, as there far fewer things to unlock and do with the game than in something like Smash Brothers, the gameplay isn't different or inspired enough to feel like anything but a knock-off, and the game lacks replay value as everything is either easy or tedious to unlock. All told, TMNT: Smash Up is a good value for fans, and a sequel with more characters and depth would be something worth seeing, but as it stands now anyone who isn't seriously into this sort of game or the franchise isn't going to get their money's worth from the game.