The PlayStation Vita could really use some top-notch AAA software, and perhaps the biggest name on the horizon is Killzone: Mercenary .

We know Killzone: Shadow Fall is going to be a launch title for the PlayStation 4, and we also know that Sony's new console already has plenty of support.

But the Vita has seemingly little in the way of support these days, so a fantastic shooter like Mercenary might help to invigorate sales. Here's some new gameplay footage taken from testers; you can see the game in action on both the Vita and big screen. There's no doubt that Sony's handheld is quite the capable device, and this could end up being the most technically proficient portable title ever seen. That alone could be enough to bolster interest. Let's just hope Sony actually promotes this one…