Tripwire’s hardcore World War II shooter, Red Orchestra 2: Heroes of Stalingrad, is available for free today. All you need to do, is head over to Steam and claim your copy.

The title is, unsurprisingly, set around the battle of Stalingrad. Both single-player and multiplayer are present, though the former serves largely as training for the latter. As long as you initiate the download, the game will be added to your library as an “owned” game.

You can do that here. The offer ends at 10 a.m. PST on April 24, 2014.