The list author says: "Like all of Nintendo's portable systems, the 3DS looks like it will be supported by most of the major game companies: Sega, Capcom, Konami, Square-Enix, Namco, Tecmo Koei, Hudson, Natsume, Atlus, Level-5, and many others have announced upcoming 3DS games."
"This was co-developed by Nintendo and Vitei. Like Q-Games, Vitei is a Kyoto-based company founded by an Englishman who originally worked with Nintendo through Argonaut, the co-developer of Starfox. Prior to Steel Diver Vitei made Theta for the original DS and Rock 'n Roll Climber on WiiWare."
"This was developed by the Tokyo-based company Art Co. Glancing through their works page may leave some wondering why the developer of Ed, Edd, and Eddy, and Kidzbop for Wii would make a game inspired by Tetsuya Mizuguchi's Rez, but they also worked on Every Extend Extra and Gunpey-R for PSP and the Gameboy Advance port of Space Channel 5."