Information in the game database is updated periodically. Below, you'll find that information compiled as pertains to Sankindo. The company may be involved as a publisher, developer or both.
Fushigi no Yume no Alice [December 7, 1990]
Hany in the Sky [March 1, 1989]
Mahjong Gakuen Toumasou Shirou Toujou [November 24, 1989]
Mahjong Gakuen Toumasou Shirou Toujou Mild [June 29, 1990]
Metal Stoker [July 12, 1991]
Time Cruise 
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.