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.