Information in the game database is updated periodically. Below, you'll find that information compiled as pertains to CyberConnect2. The company may be involved as a publisher, developer or both.
Solatorobo: Red the Hunter [September 27, 2011]
Tail Concerto [October 25, 1999]
.hack Part 1: Infection [February 11, 2003]
.hack Part 2: Mutation [May 6, 2003]
.hack Part 3: Outbreak [September 9, 2003]
.hack Part 4: Quarantine [January 13, 2004]
.hack//G.U. Vol. 1: Rebirth [October 24, 2006]
.hack//G.U. Vol. 2: Reminisce [May 8, 2007]
.hack//G.U. Vol. 3: Redemption 
Naruto: Ultimate Ninja [June 26, 2006]
Naruto: Ultimate Ninja 3 [March 25, 2008]
Ultimate Ninja 4: NARUTO Shippuden [March 24, 2009]
Naruto Shippuden: Ultimate Ninja Heroes 3 [May 11, 2010]
Naruto: Ultimate Ninja Heroes 2 - The Phantom Fortress [June 24, 2008]
There are numerous companies in the industry, and their names change like the weather. The information above is not particular about the finer details. Acquisitions are common, so companies with no recent listings may still be developing games under a new name. For example, DMA Design currently has a Rockstar name. Do you know of a title that is not listed above but should be? Be sure and let a staff member know. You can contact staff if you click here.