Rat Race was a comedy/adventure game, that was meant to be sold as individual episodes on the PlayStation Network Store. Rat Race was set in an office – an extremely dysfunctional one. The company was called BiggCo, and the people who were worked there… probably should have did something else. Your job was simply to make it through the day as bombs go off all around. [Info from Wikipedia]
At E3 2008, Shuhei Yoshida, president of Sony Worldwide Studios, announced that the game has been cancelled.