Game companies starting with letter J

Company nameGamesFoundedLocationWww
Jaleco 1 1974 Shinagawa-ku, Tokyo, Japan  
Jeff Tunnell Productions 1 1992 Oregon, U.S.  
Joosa Riekkinen 1 1982 Finland  
JRC Interactive 2 1988 Prague, Czech republic  
Juha Kauppinen 1   Finland