Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue:
Online game	$ 151,168	$ 139,372	$ 461,292	$ 402,608
Advertising and other	44,569	37,239	117,656	95,255
Total revenue	195,737	176,611	578,948	497,863
Costs and expenses:
Cost of revenue	57,187	53,286	172,588	158,078
Research and development	78,416	100,113	276,832	291,419
Sales and marketing	43,549	44,005	116,507	115,466
General and administrative	25,765	38,536	103,951	128,703
Total costs and expenses	204,917	235,940	669,878	693,666
Income (loss) from operations	(9,180)	(59,329)	(90,930)	(195,803)
Interest income (expense), net	566	841	1,965	2,487
Other income (expense), net	2,285	647	11,843	2,668
Income (loss) before income taxes	(6,329)	(57,841)	(77,122)	(190,648)
Provision for (benefit from) income taxes	(9,381)	(783)	(6,810)	(9,874)
Net income (loss)	$ 3,052	$ (57,058)	$ (70,312)	$ (180,774)
Net income (loss) per share:
Basic	$ 0.00	$ (0.06)	$ (0.08)	$ (0.21)
Diluted	$ 0.00	$ (0.06)	$ (0.08)	$ (0.21)
Weighted average common shares used to compute net income (loss) per share:
Basic	921,116	884,021	910,469	869,178
Diluted	940,032	884,021	910,469	869,178