So, the Card E-Reader for GBA is this weird little add-on that lets you scan trading cards to unlock extra stuff—mostly NES games and minigames. It’s kind of a neat idea, but here’s the catch: you need the actual physical cards to make it work, and this ROM alone won’t do much without them.

If you’ve got the cards, though, it’s a fun novelty—imagine swiping a card and suddenly playing Donkey Kong or unlocking some obscure microgame. Just don’t expect it to be super practical unless you’re deep into collecting GBA oddities.