[Killing Floor](http://store.steampowered.com/agecheck/app/1250/) is a cooperative survival horror first-person shooter on Windows, Mac, and Linux. Slaughter wave after wave of increasingly brutal experimental specimens with 7 different classes to choose from. Notoriously difficult and notoriously fun!
Reddit community and official fansite for the free-to-play third-person co-op action shooter, *Warframe*. The game is currently in open beta on PC, PlayStation 4, Xbox One, and Nintendo Switch. For the new Reddit design, go to https://rwarframe.github.io/#flair to set user flair and text.