TMNT was a sponsored event that took place in 2012 to sponsor the Nickelodeon show with the same name and was created by the user "TMNT". The event had 4 unlockable characters to play as (Leonardo, Donatello, Michelangelo, and Raphael). There was also a 5th unlockable character which you had to be the highest MVP in the server and beat all the missions, once when you did this you would unlock Master Splinter.
When you join the game there would be a play screen and after when you press "play", then you could choose a character. Then once when a player chose a character you would spawn in the lair which was in the sewers. The game had various places where enemies called the "Foot Clan" would spawn. You would be assigned to defeat them at this certain place. After you've defeated all the Foot Clan soldiers in the sewers it would then tell you to go to the city and defeat more there. Once when you defeat all the enemies in the city, then your last mission would be to defeat the Shredder which was a boss battle. Then if you won or failed the game would simply restart again.