Which game released exclusively on PlayStation portable was released at the same time as Assassin's Creed II in 2009?
Assassin's Creed: Bloodlines: Assassin's Creed: Bloodlines is an action-adventure video game for PlayStation Portable, part of the "Assassin's Creed" franchise, taking place in between the events of "Assassin's Creed" and "Assassin's Creed II". Assassin's Creed II:  The game was first released on the PlayStation 3 and Xbox 360 in November 2009, and was later made available on Microsoft Windows in March 2010 and OS X in October 2010.
Assassin's Creed: Bloodlines