Posts in "Announcements" channel about:

Critical Mass

Show posts for all products, not just Critical Mass
May 13, 2013
New Week Long Deals Available on Steam!
Announcement - Valve
Save up to 75% on new Week Long Deals on Steam, available now until May 6th at 10AM Pacific time!













Jul 26, 2011
Daily Deal - Critical Mass 66% off!
Announcement - Valve
Today's Deal: Save 66% off Critical Mass

Look for the deals each day on the front page of Steam. Or follow us on twitter or Facebook for instant notifications wherever you are!

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