In no particular order, here are my favorite games. (or the ones I can think of.) Some are just going to be the name of the series. because if that wasn't the case it would be all Metroid.

Metal Arms: This game is an all around blast. Makes me wish that I knew how to adjust my TV screen so I could play my PS2 again.

Kid Icarus: Any game where you can wield a pair of "machine gun wolverine gauntlet claws" just has to be fun. And that is my new name for those weapons.

Scribblenauts: Because summoning almost anything you can imagine can go hilariously wrong really fast.

Pokemon: I don't have anything witty for this one...

Customrobo: I've always loved this game.

Super Smash Bros.: Who doesn't love this game?

Legend of Zelda: Nothing terribly witty here either....

Animal Crossing: Only played new leaf, but it's an enjoyable game.

Metroid: Seriously. I love this series. The 3DS needs this. badly.