Sony has revealed that Killzone: Mercenary, an FPS title developed exclusively for the PS Vita by Guerrilla Games, is using the same engine as PS3 game Killzone 3.

Killzone: Mercenary is said to make full use of the handheld's graphical and input capabilities, and certainly looked the part in the trailer revealed at Sony's gamescom press briefing.

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For the first time in the series' history you'll be fighting alongside Helghast forces as well as ISA specialists, giving you a unique view on the ongoing conflict.

You're a mercenary for hire, free to decide which tactics, weapons and tools you'll use on each mission, with your employers handing over cash and high-powered weapons in reward for a job well done.

Killzone: Mercenary has been given a 2013 release.