Humble Bundle has a free giveaway of Rising Storm GOTY (tags: realistic, world war 2, FPS, action, multiplayer) until 1 day, 22 hours (as of May 25) at https://www.humblebundle.com/store/rising-storm-game-of-the-year-edition

If you don't like clicking links, just search for this on Humble Bundle.

Cheers!