If you've ever wanted to mess around with N64 games beyond what the developers intended, Action Replay Pro 64 is basically a cheat code playground. The interface is clunky in that charming late-90s way, but once you get the hang of it, you can do some ridiculous stuff—unlock hidden characters in GoldenEye, give yourself infinite lives in Mario 64, or just break games in hilarious ways.

I spent way too much time testing random codes on Ocarina of Time just to see what would happen (let’s just say Link wasn’t meant to walk through walls). It’s not polished by modern standards, but that’s part of the fun—half the appeal is stumbling onto glitches the original devs never imagined. If you’re into N64 nostalgia with a side of chaos, this thing delivers.