the games play on which ever screen you set it to. the touch screen has no function when playing gba games. Proving::::: because when they makes any kind of GBA game, they will make game that for ONLY FOR GBA abvanced (or SP) or GBA color. Because ON GBA and GBA advanced don't have neither double screen (DS) nor touch pad(or screen ) which we call it "tablet".I know, so.... definetely no. You can's have or play GBA game on double screen ...... well you can change bottom or top which screen to play..