While the church downstairs prepares to celebrate the Christmas season, Tripwire Interactive has been busy creating an expansion for Killing Floor that lets you kill Santa Claus, along with a special present for fans of Valve's Team Fortress 2.

The Ball used to be a mod for Unreal Tournament 3, but its concept turned out to be neat enough to warrant a full retail release on Steam.

Tripwire Interactive, the studio formed by members of the team responsible for the award-winning Unreal Tournament 2004 mod Red Orchestra, has picked up Teotl Studios' award-winning Unreal Tournament 3 mod The Ball and is running with it.

It's a free Killing Floor weekend on Steam, as Tripwire celebrates the release of the free Level Up content pack, adding new creatures, classes, weapons, maps, and perk levels to the co-op mutant survivor game.

ACE Team's first-person melee combat game Zeno Clash is getting the retail box treatment courtesy of Tripwire Interactive, a publisher that truly understands the plight of the independent developer.

Here's a set of screens for Tripwire Interactive's Red Orchestra 2: Heroes of Stalingrad, the game featuring a single-player campaign that lets you play as the Germans during World War II.

There's long been a complaint that, aside from a select few strategy titles, gamers are never given the chance to play as the Germans in a Second World War game. For better or worse.

Killing Floor, the co-op survival game by Georgia's own Tripwire Interactive is now available for pre-purchase through Steam, with a discount in store for those who order early.

Tripwire Interactive today announces Killing Floor, a co-op first-person survival horror shooter for the PC based on an Unreal Tournament 2004 conversion.