Kuroi Games is an American Eroge company known for their use of 3d computer graphics in their cgs.

History
Kuroi games was formed in May of 2007 by Kuroi, Laura and Joe when they met on a road trip to see the J-Rock Revolution concert in LA and discovered a common love of hentai games and visual novels. Upon returning from the concert (which was AWESOME by the way) they founded Kuroi Games and began work on their first visual novel.

[from Kuroi Games website]