Cheat Codes for Teenage Mutant Ninja Turtles II – The Arcade Game – Nintendo (NES)

9 extra lives – At the title screen before the demonstration begins, press Up, Right, Right, Down, Down, Down, Left, Left, Left, Left, B, A, Start.

Stage Select – At the title screen before the demonstration begins, press Down, Down, Down, Down, Down, Right, Right, Right, Right, Right, Right, Right, B, A, Start.

Stage select + 9 extra lives – At the title screen before the demonstration begins, press B, A, B, A, Up, Down, B, A, Left, Right, B, A, Start. For 2 players, press B, A, B, A, Up, Down, B, A, Left, Right, B, A, Select, Start.