What new game should I buy for pse?

Do you mean ps3? If yes then it depends on what you like. Call of duty black ops is a first person shooter and has great online play. Assassins creed brotherhood is out i believe that's an action adventure game very fun. A open world rpg called two worlds comes out the 25 th kind of like oblivion. Little big planet 2 is due soon as is dead space 2 and the release of mass effect 2 on ps3 (highly recommend awesome game) That's the best i can think of in the near future. Hope that helps :)