Its for nintendo ds it plays on it great and the ds saves all games this game saves on it own after u hit the check marks. I have the Ds up for bid that I played it on the one that has a charger I got two up for bid
Gameboy advance games use rom chips to save data and they need to have internal batteries to do that (ended after the Gameboy color). Unless the cartridge is a bootleg it is pointless to ask if it could still save.