Lad, I've never touched a GBA or programmed for one in my life. There's no way on Earth I could code walk3d, leonard or anything like that. Walk3d was created by Torlus, leonard by Leonard/OxyGENE. The only graphical demo I've fully written myself is fill1.bin; that's the extent of my graphic skills. So are those roms just regular GBA roms? Basically yes, but very tripped down, since you know, they are test demos.