Play Action Replay (Program) Online

Action Replay was a third-party cheat device for the Sega Genesis, released by Datel. It wasn't a game, but a tool that let players modify their existing games, offering a new way to interact with the console's library during the 16-bit era.

You navigate a simple on-screen menu to input codes that alter game variables, granting things like infinite lives, level skips, or altered physics. The main objective is experimentation; finding what each code does and bending the rules of familiar games. The pacing is entirely self-directed, turning difficult challenges into playgrounds or breaking progression entirely. It feels like having a backstage pass to every game on the system.