There are LOTS of good virtual console games for it, too. Although the one I want most (Super Metroid) has yet to hit the US eShop.
SOME of my library:
That's:
Super Mario 3D Land
Paper Mario: Sticker Star
New Super Mario Bros. 2
Lego LotR, Kirby's Adventure
Metroid
Zelda
Zelda II
and Zelda: Link's Awakening all on the home screen.
I also have:
Cave Story
NightSky
Tetris
ExciteBike
Donkey Kong
Kid Icarus (NES)
Super Mario Land 1 and 2
Super Mario Bros. 1 and 2 (Japanese 2, not American 2)
Dr. Mario
Metroid II
Kirby's Dream Land
Wario Land
Earthworm Jim
Xevious
Puzzle Quest
Ghosts & Goblins
and a handful of other games in the folders.
ALL downloaded to the device and playable any time.