Tomorrow, April 23, Tripwire Interactive's Red Orchestra 2 will be completely free. That means that for those 24 hours, if you "buy" Red Orchestra 2 for free, it will be yours to keep forever at absolutely no charge at all.
Yes, Free! By navigating to http://store.steampowered.com/app/35450/ and downloading the game tomorrow after the promotion starts and before it ends (the promotion will last 24 hours), the game will be free to keep forever!

Following this, we will be rolling into a free weekend for Rising Storm (free for a limited time) as well as a discount! If you've been trying to convince a friend to play Red Orchestra 2 with you, there will be no better time than tomorrow!

This news follows yesterday reveal of the Game of the Year version of Red Orchestra 2 and Rising Storm (seen below). It also follows the rather major Red Orchestra 2 update that was just released for the game that includes transport vehicles, a new map, a new game mode, and much more.