I had my mind blown yesterday, twice.
First, at the local game store I saw one of my favorite childhood PC games: Jeff Gordon XS racing, but in Game Boy form! Had no idea it was ported to GB. Had to get it.
Side note, XS racing on PC is a killer game, sadly very few have heard of it, go play it!
So it worked great in my OG game boy. Super fun but ofc not as good as the PC one.
I decide to look the game up. Everything about it says gameboy color. It is NOT a gameboy color cartridge. However, it WILL play on a gameboy advance SP in color! So i learned there are some backward compatible GBC games.
Also someone told me years back OG GB games dont work on an SP. Well, they do!!
Just some fun weird facts!


Not only do GB and GBC games work on the GBA, but some of them even have special GBA-only content. I know that at least one of the Legend of Zelda Oracle games has an extra house in the village on GBA. When you play the game on a GB/GBC, there’s just an empty lot in that place.