TMNT Cowabunga is a free fan game created by me, i love ninja turtles since i was a 5yo kid and that's my way to celebrate that love.
It's a good old platformer in gameboy style, just 4 colors on screen.
Simple gameplay, you can switch the 4 turtles and use them during the stage, you can collect ninja stars and perform ground attack and aerial attack. (each turtle a different one).

Each turtle's got a lifebar, but be careful, if you loose one of the four it's game over! So you are forced to use all of them as a good team. (obviously ;)