Teenage Mutant Ninja Turtles - Red Sky Battle is a Ninja Turtle fangame created by Pro Igrok and ALEX_230_VOLT based on BonusJZ's Teenage Mutant Ninja Turtles - The Wrath of Shredder using OpenBOR. Actually for now, this game is more like an extension of Teenage Mutant Ninja Turtles - The Wrath of Shredder. The game features all 4 turtles playable + 3 secret characters (comparing to Teenage Mutant Ninja Turtles - The Wrath of Shredder with only Leonardo and Donatello playable + 1 secret character), 22 levels (comparing to Teenage Mutant Ninja Turtles - The Wrath of Shredder with only 6), 2 game modes, 4 player support and TMNT launcher - a special program to unlock extra features by entering codes, which can be found during gameplay.