The Wonders Of Fire Emblem
Why was I not informed that there is a portable version of Ogre Battle with a slightly different name and combat system? =P But seriously, I'm hooked on Fire Emblem: The Sacred Stones. I'm actually digging some of the free GBA games I got, Warioware and this in particular. I didn't even bother downloading MK: Super Circuit though, since I have a vastly superior Mario Kart available.