Alien Syndrome Classic Co-op
Sega Master System · cheat codes
Spy vs. Spy cheats & codes
2 codes for Spy vs. Spy on the Sega Master System, including Action Replay codes.
Spy vs. Spy 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 |
|---|---|
| Round Modifier (0 - 7) | 00C1-120X |
Spy vs. Spy 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 |
|---|---|
| Round Modifier (0 - 7) | 00C1-1200 |
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.
Spy vs. Spy walkthroughs & guides
More Master System games with cheats
Back to Spy vs. Spy: 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.