The PlayStation Vita is desperately in need of a killer app. With the recent price drop and impending slew of indie titles headed to the portable, the one final push it needs to drive a proper install base is one game that’s just too good to pass up. After spending some time with the beta for the latest entry in the Killzone franchise, I’m seeing a game with some good potential to provide that needed push. After some time with the beta for Killzone: Mercenary, my hopes are certainly higher for the future of the portable console.