Ucell on 31 December 2012
Vita's got many exclusive, not just one. Let me count it for you. There's Uncharted: Golden Abyss, Wipeout 2048, Assassin's Creed 3: Liberation, Gravity Rush, Call Of Duty: Black Ops Declassified, Resistance: Burning Skies, Unit 13, Tales Of Innocence R, Persona 4: The Golden, LittleBigPlanet PS Vita. So, they add up to 10 exclusives.
