Announcement - Valve
Kick off the weekend by playing Call of Duty®: Modern Warfare® 3 for FREE starting now through Sunday at 1PM Pacific Time.
Additionally, pickup Call of Duty®: Modern Warfare® 3 this weekend only at 33% off the regular price! Sale ends Monday, April 30th at 10AM Pacific Time.
If you already have Steam installed you can click here to install or play. If you don't have Steam, you can download it here.
