Sega Master System · cheat codes
Opa-opa cheats & codes
9 codes for Opa-opa on the Sega Master System, including Action Replay codes.
Opa-opa 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 - Player 1 | 00C0-6705 |
| Infinite Lives - Player 2 | 00C0-6805 |
| Final Round (51) | 00C0-4C32
00C0-4D33 |
Opa-opa 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 - Player 1 | 00C0-6705 |
| Infinite Lives - Player 2 | 00C0-6805 |
| Final Round [51] | 00C0-4C32
00C0-4D33 |
| Collect one dot to finish a Round | 00CD-0F01 |
| Final Round (51) | 00C0-4C32
00C0-4D33 |
| Infinite Lives | 00B-BCA-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.
Opa-opa walkthroughs & guides
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Back to Opa-opa: 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.