Sonic the Hedgehog 2 Classic Co-op
Sega Genesis / Mega Drive · cheat codes
Radical Rex cheats & codes
24 codes for Radical Rex on the Sega Genesis / Mega Drive, including Action Replay codes.
Radical Rex 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 Energy P1 And P2 | FFD40D:40 |
| Infinite Lives P1 | FFFAFD:63 |
| Infinite Lives P2 | FFFB31:63 |
Radical Rex 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 Energy | AJ5T-4A5C |
| Infinite Lives | ACYT-2AD6 |
| Invincibility | RY5A-46VG |
| Infinite Energy P1 And P2 | FFD40C:0040 |
| Infinite Lives P1 | FFFAFC:0063 |
| Infinite Lives P2 | FFFB30:0063 |
| Select 2 Players to go to a Level Select screen. Must be a 1 player game. | JS2T-2ABL |
| Select Options to go to a Level Select screen | JS2T-2AAW |
| Jump higher | AAMA-5V9C |
| Jump much higher. See notes. | AAMA-5P9C |
| Don't fall when walking off ledges (Walk on air). See notes. | AJLA-4A92 |
| Player 1 starts with 9 lives (Easy difficulty) | BGZA-2AGT |
| Player 1 starts with 20 lives (Easy difficulty) | CWZA-2AGT |
| Invincibility (non flashing) | RZFT-46X6 |
| Invincibility (flashing) | RE5A-46VL |
| Start with more fire power (longer flame) | SWZA-3GK8
ARZA-2ACA |
| Start with max fire power (much longer flame) | SWZA-3GK8
A0ZA-2ACA |
| Invincible | FFFB1D:0010 |
| Invincibility From High Falls | RYNA-46TT |
| Freeze Time Continue | FFFA25:0015 |
| Freeze Time Continue | AM1A-2A44 |
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.
Radical Rex walkthroughs & guides
More Genesis games with cheats
Sonic the Hedgehog 3 Classic
Sonic the Hedgehog Classic
Earthworm Jim Classic
Super Mario All-Stars Classic
World of Illusion Starring Mickey Mouse and Donald Duck Classic Co-op
Back to Radical Rex: 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.