I think we can safely assume that any game that uses the circle pad pro can work with ir:USER (considering it's the service that the CPP is used with), so here's a list I found of titles that should be compatible (according to http://nintendo3ds.wikia.com/wiki/Circle_Pad_Pro, so take it with a grain of salt):
- Monster Hunter 3 Ultimate
- Ace Combat: Assault Horizon Legacy (Japanese version only)
- Resident Evil: Revelations
- Metal Gear Solid: Snake Eater 3D
- Kid Icarus: Uprising
- Kingdom Hearts 3D: Dream Drop Distance
- Dynasty Warriors VS
- Nano Assault EX
- One Piece Unlimited World RED
- Samurai Warriors Chronicles 2nd
- Steel Diver: Sub Wars
- Monster Hunter 4 Ultimate
- Legend of Zelda: Majora's Mask 3D
- IRONFALL Invasion
- Code Name: S.T.E.A.M.
- Shantae and the Pirate's Curse
- Moon Chronicles
- Picross e (Japanese version only)
- Galaxy Force II
- After Burner II
- Final Fantasy Explorers


) lol






