Play [Program] Pro Action Replay 2 (Europe) (Alt) Online

Remember that little gray cartridge you'd jam into your Sega Genesis before your actual game? The Pro Action Replay 2 was basically a backstage pass to breaking every rule. Suddenly Sonic could survive spikes, Streets of Rage became an endless beat-em-up, and you could finally see what that last level of that one impossible game actually looked like.

Half the fun was finding codes that actually worked—some gave you legit advantages, others just made the game freak out in the best ways. I still remember scribbling down combinations from magazines and testing them for hours. It wasn't cheating... it was "creative problem-solving."

If you ever blew into a cartridge or argued with friends about whether "ABACABB" did anything beyond Mortal Kombat, this thing was your childhood in plastic form.