The agreement covers titles such as BOTS!, 9Dragons, 2Moons, and DANCE!, as well as two other unannounced titles.
IGA Worldwide and Acclaim are hoping to reach different audiences given the wide range of games. Acclaim launched BOTS! in July 2006 and claims 500,000 registered users in North America and Europe.
The deal follows agreements with Valve, the developer behind Counter-Strike, in December and major game maker Electronic Arts in August.