In the mood to kill some Zombies? Well here's your free chance as Killing Floor is currently free on Humble Store.
The game is still surprisingly popular for an older title, even now it has over six thousand people playing it, which is quite surprising. It is a pretty fun game though!
It's a wave-based Zombie shooter, where you team up with a bunch of others to survive. You can weld doors shut, level up your characters, buy new weapons in-between waves and more.
The Linux version is pretty rough around the edges, as it never really got fixed up after release, so keep that in mind.
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