Information in the game database is updated periodically. Below, you'll find that information compiled as pertains to IGS. The company may be involved as a publisher, developer or both.
Astro Rabby [October 12, 1990]
J-League Fighting Soccer: The King of Ace Strikers [December 27, 1992]
Vattle Giuce [July 12, 1991]
World Beach Volley: 1991 GB Cup [December 13, 1991]
Dahna: Megami Tanja [December 20, 1991]
Battle Stadium: Senbatsu Pro Yakyuu [December 19, 1990]
Inbou no Wakusei: Shancara [June 26, 1992]
J-League Fighting Soccer: The King of Ace Strikers [June 19, 1993]
Puzznic [November, 1990]
Robocco Wars [August 2, 1991]
Super Mogura Tataki!! Pokkun Mogura [December 8, 1989]
Martial Masters (ARC) 
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.