Developer Page: Mobile & Game Studio
(dev id no. 33 - prev next)
I'm pretty sure this is just a part of IMJ Entertainment. They haven't done much on consoles, but they have developed a few interesting looking mobile games. Interesting looking mobile games that I will never, ever play, because I don't live in Japan and therefore can't get hold of them. Grr.
Official Site: http://www.mgst.co.jp/
Simple 2000 Series
The Party Unou Quiz (with IMJ Entertainment), The Zerosen (with Bit Town)
Simple DS Series
The Party Unou Quiz