Information in the game database is updated periodically. Below, you'll find that information compiled as pertains to Compile Heart. The company may be involved as a publisher, developer or both.
Hyperdimension Neptunia mk2 [February 28, 2012]
Hyperdimension Neptunia Victory [March 22, 2013]
Megazone 23: Aoi Garland [September 13, 2007]
Mugen Souls [October 18, 2012]
Record of Agarest War [unknown]
Record of Agarest War 2 
Record of Agarest War Zero [June 14, 2011]
Hyperdimension Neptunia: Producing Perfection [June 3, 2014]
Octomania [March 11, 2008]
Sugoro Chronicle: Migite ni Ken o Hidarite ni Saikoro o [November 20, 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.