TMNT – code sheet Posted on March 6, 2016 by Steverd TEENAGE MUTANT NINJA TURTLES This game was released by ULTRA games. It was a double disk set with data on the front and back. After the game loads you get this screen to the left. You have to look up the code on a red code sheet, In this case you had to look up the ‘J29’ to progress in the game. HERE is the TMNT-FIXED in PDF format for you to print out.