Download Pre-Patched Pokemon Dark Cry: The Legend of Giratina GBA. When you awoke, you realised you were in a cave, and everything was black & white.
Pokemon Let's Go Pikachu & Eevee GBA are a pair of FireRed hacks based loosely on the Switch games but with additional added features like Gen 8 Pokemon.
Download Pre-Patched Pokemon Crystal Advance Redux GBA Rom. It is a continuation/alternate version of the ROM hack, Pokemon Crystal Advance.