Premise: Test Drive Unlimited 2 is an open world racing video game developed by Eden Games and published by Atari, Inc. It is the tenth installment of the "Test Drive" series, and the second after "Test Drive Unlimited" to be marketed under the "Unlimited" franchise. It is the second game in the series to be based on open world-styled gameplay.
Hypothesis: Test driver unlimited 2 is the only game in the series to be based on open world-styled gameplay.