Alex Kidd in Miracle World Classic
Sega Master System · cheat codes
Teddy Boy cheats & codes
6 codes for Teddy Boy on the Sega Master System, including Action Replay codes.
Teddy Boy Action Replay codes
How to use: Datel's Action Replay sat between the console and the game. Enter codes on its menu before starting the game, or paste them into your emulator's cheat menu.
| Effect | Code |
|---|---|
| Infinite Lives | 00C0-1B04 |
Teddy Boy Other codes
How to use: Additional codes collected by the community. Enter them through your emulator's cheat menu, choosing the format that matches your emulator.
| Effect | Code |
|---|---|
| Infinite Lives | 00C0-1B04 |
| Invincibility | 3A6-8FF-2A2 |
| Infinite Lives | 773-D9C-193 |
| Infinite Time | 2A4-C3E-6E2 |
| Infinite Lives | B62-19C-3BE |
Using cheats today
Original cheat devices like the Game Genie, Action Replay and GameShark still turn up second-hand and work with original cartridges. Most modern emulators also have a built-in cheat menu that accepts these formats, so you can toggle codes on and off without extra hardware. Codes can differ between regional releases and revisions of a game; if one doesn't work, try the code list for another version.
Cheats can corrupt save files in rare cases, so back up your saves before experimenting.
More Master System games with cheats
Alex Kidd: The Lost Stars Classic
Wonder Boy in Monster Land Classic
Alex Kidd in Shinobi World Classic
Alex Kidd: High-Tech World Classic
Back to Teddy Boy: is it worth playing?
Cheat codes are from the libretro-database community collection, used under CC BY-SA 4.0; the code tables on this page are shared under the same license. Codes are provided as-is: some may not work on every version of the game.