Red Orchestra: Ostfront 41–45 is a tactical first-person shooter video game based on its predecessor Red Orchestra: Combined Arms. After winning the Make Something Unreal contest, the team behind the original Red Orchestra started the game studio Tripwire Interactive and developed Red Orchestra: Ostfront 41-45 as their first project.

Make Something Unreal, also known as $1,000,000 Make Something Unreal Contest and Make Something Unreal Live, was a series of video game development competitions organised by Epic Games which began in 2004, with subsequent competitions in 2008, 2012, and 2013. The contests aimed to reward developers who created mods using the Unreal game engine. Make Something Unreal has not returned since the event in 2013. Epic Games has since launched Epic MegaGrants, a grant based scheme, in 2019.