Well, there's Harvest Moon: More Friends of Mineral Town (if you have this in your DS while you have HM DS: Cute in there, you can visit Mineral Town and you can marry a whole bunch of other bachelors that you can't otherwise), FFI-VI (though i don't think III is out for GBA, is it?), Super Mario Bros. 3 (I had it but I can't find it anywhere ), Donkey Kong 2, Mario Advance 3: Yoshi's Island (baby mario is <3), and maybe Legend of Zelda: The Four Swords, not sure about that one yet.