I hope you get it switch-modded or buy an Action Replay to play imports, because Japan is where it's at baby
Sonic Jam (all Sonics in one without genesis slowdown
Radiant Silvergun (good luck, this is a ~200 dollars investment :P)
Sega Rally (BEST driving game IMO!)
Castlevania: Symphony of the Night
Shining Force 3 (all chapters)
Hmmm... lots of other great conversions like Puzzle Bobble and Puyo Puyo... and great fightters but since you dont like them....