Killing zombies around could be a joyment for someone, that's what zombie fanboys can find in 2013: Infected Wars, a brand new third-person shooter game which of the gameplay is nothing more but to wipe out zombies.

VGChartz's Adam Cartwright: "Thanks to some solid late-in-life Japanese support, and a sea of backwards-compatible games, the Vita’s library of third-person shooters is a lot better than it first appears, covering a variety of sub-genres from horror to stealth to tactical, all the while providing games that are a tonne of fun to play."
Missed so many games.
Also backwards compatibility differs from region to region.
Literally some stores like the NZ/Aus store will allow syphon Filter 1 and 3 but not 2 and the USA store is different again

Action Mobile have brought their third person zombie shooter, 2013: Infected Wars, to the Vita. We all know the Vita could do with a few more shooters, but should they have left it where it was?

PS Vita Reviews just finished up their play of the Vita's newest shooting game. Here are their final thoughts on 2013 Infected Wars:
"2013: Infected Wars is the Vita’s newest third-person shooter. On the downside, the Multiplayer has been removed, getting gold is very grind-heavy, and there are some frame issues when the screen gets overloaded with enemies. Past this is a solid third-person shooter that any shooting fan can get some enjoyment out of. "