The Vita is getting a lot of love at Sony's Gamescom press conference. First we learned that Media Molecule is working on a Vita game called Tearaway. Sony followed that announcement up with Killzone Mercenary, a new shooter created exclusively for the Vita. Most of the trailer showed live action footage, but eventually gave way to a few seconds of gameplay with plenty of screen swiping, and the return of the Helghan Empire.