As part of a sizable new update, Unkilled, the super bloody zombie-slaying FPS, is getting a brand new and extensive co-op mode. The killing of zombies is always best done with some friends by your side, so obviously this is a very welcome inclusion.

In Unkilled, you assume the role of a highly-skilled gun-man, who's been tasked with taking on the zombie hordes after an outbreak in New York City.

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If my description has left you feeling a bit unenthused about Unkilled, then perhaps our review can shed some light on why you should give it a shot. On release, we praised it for its satisfying shooting mechanics and brilliantly flowing action. You can check out the full thing here.

So, if you've recently been hankering to decimate some undead brains, the game is available for free over on the App Store and Google Play. It was already pretty great to start with, so the inclusion of co-op is just the cherry on the decaying and fleshy cake, because zombies.