Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue:
Online game	$ 174,370	$ 285,587	$ 607,262	$ 869,915
Advertising	28,210	31,050	89,642	100,187
Total revenue	202,580	316,637	696,904	970,102
Costs and expenses:
Cost of revenue	59,011	90,150	189,482	275,113
Research and development	81,023	155,609	334,526	513,801
Sales and marketing	21,170	36,586	79,640	149,478
General and administrative	34,012	35,353	121,193	156,798
Impairment of intangible assets	10,217	95,493	10,217	95,493
Total costs and expenses	205,433	413,191	735,058	1,190,683
Income (loss) from operations	(2,853)	(96,554)	(38,154)	(220,581)
Interest income	965	1,144	3,233	3,519
Other income (expense), net	929	(350)	(4,465)	19,758
Income (loss) before income taxes	(959)	(95,760)	(39,386)	(197,304)
Provision for (benefit from) income taxes	(891)	(43,035)	(27,646)	(36,417)
Net income (loss)	$ (68)	$ (52,725)	$ (11,740)	$ (160,887)
Net income (loss) per share attributable to common stockholders
Basic	$ 0.00	$ (0.07)	$ (0.01)	$ (0.22)
Diluted	$ 0.00	$ (0.07)	$ (0.01)	$ (0.22)
Weighted average common shares used to compute net income (loss) per share attributable to common stockholders:
Basic	804,129	754,862	791,032	729,184
Diluted	804,129	754,862	791,032	729,184