Missing title added: Luigi's Mansion: Dark Moon.
New added: Young Justice: Legacy; Mario Golf: World Tour, announced in Nintendo Direct on 17th April 2013.
This is the list of Nintendo 3DS games that allow player to get online through the wireless connection and play with the other players in the world. Some of the games support local wireless multiplayer but could not play though internet such as Super Monkey Ball 3D, Steel Diver, Pro Evolution Soccer, etc will not be listed here. This is an online multiplayer games list.
And this is only games for US region, titles for the other region are not included. However any of the games listed here, they probably able to play online with player in different region.
Will keep updating the list as soon as any title has been confirmed. Please correct me if you found wrong information here.
Animal Crossing: New Leaf (Virtua Life)
Code of Princess (Action-Adventure)
Dead or Alive Dimensions (Fighting)
Face Racers: Photo Finish (Racing)
Heroes of Ruin (RPG)
Kid Icarus: Uprising (Action-Adventure)
Luigi's Mansion: Dark Moon (Action-Adventure)
Mario Kart 7 (Racing)
Mario Tennis Open (Sport)
Mario Golf: World Tour (Sport)
Monster Hunter 4 (Action-RPG)
Planet Crashers 3D (Fighting)
Pro Evolution Soccer 2012 3D (Sport)
Resident Evil: The Mercenaries 3D (Action-Horror)
Resident Evil: Revelations (Survival-Horror)
Sonic & All-Stars Racing Transformed (Racing)
Super Smash Bros. 3DS (Fighting)
Super Street Fighter IV 3D Edition (Fighting)
Tekken 3D Prime Edition (Fighting)
Tetris Axis (Puzzle)
Young Justice: Legacy (Action)