Tripwire Interactive's Rising Storm is a multiplayer PC shooter in the Red Orchestra series, taking you to the Pacific part of WWII, and now the Game of the Year Edition is available on the Humble Store for no charge.
The offer only lasts until tomorrow, so you'd best be quick if you want to get your hands on the game, although we'd say it's worth it (check out our review), especially since there's asymmetrical warfare, historical weapons, and grand multiplayer battles to engage in.
Rising Storm 2: Vietnam is out on May 30, so will you be getting this to prepare yourself?