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The Game Boy's Hidden Powers, Part 8: Every Game at Once

Marcel Pflug

Aug 31

3 min read

Imagine a single cartridge that holds not one game but your entire shelf. That is where our short series on the hidden powers of the Game Boy's cartridge slot arrives in Part 8, and it is where the story turns from curiosity to preservation.

A library on a memory card

The Everdrive GB X7, made by the developer krikzz, is the most advanced flash cartridge for the original Game Boy and Game Boy Color. Instead of holding one fixed game, it loads ROM files from a microSD card on real hardware, so a single cartridge can stand in for a whole collection. It adds conveniences the originals never had: fast loading, save states, a real-time clock for games like Pokemon that track the passing of days, cheat support in the tradition of the Game Genie, and battery-backed saves. It is, in a very real sense, the cartridge slot reaching its final form.

Game Boy Everdrive X7 by kriKzz — One card. Every cartridge you ever owned. Give or take.

There is something quietly wonderful about that. The slot that once accepted exactly one game at a time, chosen at the shop and carried home in a cardboard box, can now hold more titles than most people played in the console's entire commercial life, all on a card smaller than a fingernail.

EverDrive X7 Closeup — krikzz versus the limits of 1989 storage.

For anyone who grew up in the era, the appeal is obvious. No more blowing into dusty connectors or hunting for a game that has drifted to the bottom of a drawer. For preservationists and developers the appeal runs deeper: a flash cartridge is how new homebrew games get tested on genuine hardware, and how old ones stay playable long after the last original cartridge has worn out.

Rescuing what is already fading

The Flash Boy comes at the same idea from the other direction. Rather than loading games onto the console, this small device backs up ROMs and save data from original cartridges, including the Pokemon games whose battery-backed saves are famously prone to dying with age. That last point matters more than it sounds. The little batteries inside vintage cartridges do not last forever, and when they fail, decades-old save files vanish for good. A backup tool is not just a convenience, it is a small act of rescue.

GameBoy Flash Boy — Backing up Pokemon before the save battery gives up.

This is where the topic gets genuinely interesting, and a little complicated. Flash cartridges and backup tools sit in a legal grey area. They are indispensable for preservation, homebrew development and keeping fragile hardware playable, and they are also the same technology that can enable piracy. Both things are true at once, and pretending otherwise does the history a disservice.

We are keeping this chapter short and staying well clear of any how-to. The point here is the capability, not the recipe.

For the full picture, including an honest look at that grey area, read our series Bootlegs and Flashcarts. It covers preservation, piracy and the homebrew revival together, because you cannot really understand one without the others.

The Everdrive, the Flash Boy and their relatives all live in the collection at the Game Boy Museum. Eight parts in, the lesson is clear. That little slot was never just for playing games. It was a doorway, and we are still discovering where it leads.