Tripwire Interactive

Tripwire Interactive is an American game development studio and publisher based in Roswell, Georgia, formed by members of the international team that created the acclaimed Unreal Tournament 2004 mod, Red Orchestra: Combined Arms. Red Orchestra won top prize in the nVidia-sponsored Make Something Unreal competition. Their first retail product, Red Orchestra: Ostfront 41-45, was released over Valve's Steam service on March 14, 2006. They are also a licensee of Epic's Unreal Engine 3. Tripwire's second game, Killing Floor, was released on May 14, 2009. Like Red Orchestra, this game also began development as a UT2004 mod, later becoming a standalone retail title. Tripwire released their third game under the title Red Orchestra 2: Heroes of Stalingrad, which is the sequel to their much earlier debut Red Orchestra: Ostfront 41-45. The game is a WWII themed first-person shooter that was developed and published by themselves. The title focuses heavily on the Battle of Stalingrad. The game was released on 13 September 2011. and uses the Unreal Engine 3.