The story
Spark Unlimited was established by a team of 28 developers who had previously worked on the Medal of Honor series. It signed with Activision to work on a Call of Duty game in December 2003.
In 2005, Spark filed a lawsuit against Activision and accused the company of trying to "kill off" Spark. Activision counter-sued for fraud.
In 2005, Spark announced a deal to develop several games for ad network Massive.
From Wikipedia’s article on Spark Unlimited, shared under CC BY-SA 4.0.4