If it were me, I'd get Castlevania and Mario. F-Zero seems uninspired to me, but neither of the previous versions did much for me either. I don't know the launch titles, but the best graphics I've seen in any GBA game so far is Pinobee: Wings of Adventure. I definitely wouldn't get Super Dodgeball, it plays too slow for it to really be fun from what I can tell so far. Mario is good. I can't tell if it's an exact port of the US SMB2, but so far it seems like it. Castlevania feels vintage and seems perfect for the system. I haven't given any game more than a five minute look, but those are my impressions so far. I haven't tried Rayman at all.