The GBA port of sonic 1 is still so endlessly fascinating to me. We have no idea who worked on it, it's like it just mysteriously spawned one day, a crummy port of a game based on a Java Phone port shoehorned onto a GBA cartridge - instead of being outscoured to DIMPS who probably would've done a fine job on the GBA or even the DS (since that was a thing at that point!), they did....that
And to reiterate: we still don't know who even worked on it!