Portal 2
Valve to release Portal 2 level editor next year -- October 22nd, 2011
Portal 2 level editor inbound, possibly with GLaDOS -- October 21st, 2011
Portal 2 free DLC celebrated with price cut -- October 5th, 2011
Free Portal 2 DLC coming October 4 -- October 1st, 2011
Portal 2 PC outsells console -- August 30th, 2011
Portal 2 DLC in September -- August 19th, 2011
Valve announces Exile Vilify music video contest winners -- August 10th, 2011
Get Portal 2 for $30, $35 with first game -- August 9th, 2011
Portal 2 shipments at 2 million — EA -- July 27th, 2011
Portal 2 by far the best-selling Steam game of 2011 -- July 26th, 2011
