Teenage Mutant Ninja Turtles III: The Manhattan Project Action Replay Codes (USA)
This page contains the Action Replay codes that I have available for Teenage Mutant Ninja Turtles III: The Manhattan Project (USA), a game for the original NES (Nintendo Entertainment System). If you're playing on an emulator, you'll typically be able to put these codes into the program through a built in option. Anyone who is really old school and playing on a physical console will have to purchase a physical Action Replay device to use these codes.
When it comes to emulation for the NES you have 3 good options to choose from. You can do RetroArch, Nestopia or MesenCE, follow the links provided to learn more about how to use the codes you find on this page on the Emulator of your choice. If you don't see the code you want on this page, I recommend you return to my Teenage Mutant Ninja Turtles III: The Manhattan Project Guides Index and choose a different section.
Character Highlighted Modifier Codes
1-Hit Kills Bosses: 0628:00
Almost Invincible: 04FF:14
Some bosses can still damage you (like Leatherhead) when they grab you
Always Clear Stage: 0040:0F
Enable The Hidden Option Menu After Choosing A Turtle: 002E:01
Hidden Option Menu's Level Highlighter Modifier: 002D:??
Infinite Continues: 07B0:05
Infinite Health P1: 04F1:27
Infinite Health P1: 04F1:7F
Infinite Health P2: 04F2:27
Infinite Health P2: 04F2:7F
Infinite Lives P1: 006A:05
Infinite Lives P2: 006B:05
Level Modifier: 0058:??
P1 Quickly Gains Tons of Points
006C:63
006D:63
P2 Quickly Gains Tons of Points
006E:63
006F:63
1-Hit Kills Bosses & 0-Hit Enemies
0626:00
0627:00
0628:00