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!


Fun fact, while the gameboy is turning on you can press a specific button combination to change the colour palette being used by the legacy gameboy games.
You can read about it here: https://yuhao-c.github.io/gameboy-user-manual/docs/changing-screen-color/
just like in the instruction manual stated:
:)
If you’re playing pokémon red and blue there’s one colour palette which makes it quite simple to navigate rock tunnel without flash
I used to have a little notebook when I was younger where I tried out every option for every game and wrote down my top 3 favorite choices for what looked best on each one.