I've got an original red 3DS, picked up used just over a year ago. Game list is as follows:
Of these, some highlights of the hard copies are Bravely Default (this is the best Final Fantasy game since at least FFIX, hands down. If you started with X, you didn't start with FF.), the Pokemon games, and surprisingly enough the Adventure Time game (if you like Zelda 2, you'll like this, and it's cheap if you can find it used), and for the E-shop titles, pretty much everything on the list is good. In fact, out of all the games I've got here, the only ones I wouldn't recommend are Rollercoaster Tycoon 3D (it's probably the worst game I've got for the system, it's more gimped than the Genesis version of Theme Park), Dream Trigger (on second thought, Rollercoaster Tycoon is only the second worst game I've got), Splinter Cell 3D, Steel Diver (the original, not Sub Wars, which is pretty darned good), Bugs Vs. Tanks, and unless you're really a fan of 90's PC dungeon crawlers, The Keep.
Pokemon Y
Pokemon Alpha Sapphire
Steel Diver
Pilot Wings Resort
Metal Gear Solid 3D
Splinter Cell 3D
The Legend of Zelda: A Link Between Worlds
Rollercoaster Tycoon 3D
Bravely Default
Dream Trigger
Shinobi
Mario Kart 7
Adventure Time: Hey Ice King, Why'd You Steal Our Garbage?
Pokemon Alpha Sapphire
Steel Diver
Pilot Wings Resort
Metal Gear Solid 3D
Splinter Cell 3D
The Legend of Zelda: A Link Between Worlds
Rollercoaster Tycoon 3D
Bravely Default
Dream Trigger
Shinobi
Mario Kart 7
Adventure Time: Hey Ice King, Why'd You Steal Our Garbage?
Inazuma Eleven
Crimson Shroud
Attack of the Friday Monsters
Etrian Odyssey: Untold
The Keep
Zelda: Four Swords Anniversary Edition
The Starship Damrey
AeroPorter
Bugs Vs. Tanks
Liberation Maiden
Moon Chronicles
Steel Diver: Sub Wars
VVVVVV
Resident Evil: Revelations
Rayman 3D
Super Street Fighter IV
Crimson Shroud
Attack of the Friday Monsters
Etrian Odyssey: Untold
The Keep
Zelda: Four Swords Anniversary Edition
The Starship Damrey
AeroPorter
Bugs Vs. Tanks
Liberation Maiden
Moon Chronicles
Steel Diver: Sub Wars
VVVVVV
Resident Evil: Revelations
Rayman 3D
Super Street Fighter IV
Of these, some highlights of the hard copies are Bravely Default (this is the best Final Fantasy game since at least FFIX, hands down. If you started with X, you didn't start with FF.), the Pokemon games, and surprisingly enough the Adventure Time game (if you like Zelda 2, you'll like this, and it's cheap if you can find it used), and for the E-shop titles, pretty much everything on the list is good. In fact, out of all the games I've got here, the only ones I wouldn't recommend are Rollercoaster Tycoon 3D (it's probably the worst game I've got for the system, it's more gimped than the Genesis version of Theme Park), Dream Trigger (on second thought, Rollercoaster Tycoon is only the second worst game I've got), Splinter Cell 3D, Steel Diver (the original, not Sub Wars, which is pretty darned good), Bugs Vs. Tanks, and unless you're really a fan of 90's PC dungeon crawlers, The Keep.