Question: Which game released exclusively on PlayStation portable was released at the same time as Assassin's Creed II in 2009?
Sentence (from "Assassin's Creed II"): It is the second major installment in the "Assassin's Creed" series, a sequel to 2007's "Assassin's Creed", and the first chapter in the "Ezio trilogy".
Relevant evidence: No