Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue:
Online game	$ 134,254	$ 151,168	$ 407,134	$ 461,292
Advertising and other	48,170	44,569	143,746	117,656
Total revenue	182,424	195,737	550,880	578,948
Costs and expenses:
Cost of revenue	62,675	57,187	175,917	172,588
Research and development	73,913	78,416	227,883	276,832
Sales and marketing	49,802	43,549	136,777	116,507
General and administrative	21,656	25,765	69,414	103,951
Impairment of intangible assets	20,677		20,677
Total costs and expenses	228,723	204,917	630,668	669,878
Income (loss) from operations	(46,299)	(9,180)	(79,788)	(90,930)
Interest income	800	566	2,266	1,965
Other income (expense), net	980	2,285	4,985	11,843
Income (loss) before income taxes	(44,519)	(6,329)	(72,537)	(77,122)
Provision for (benefit from) income taxes	(2,782)	(9,381)	204	(6,810)
Net income (loss)	$ (41,737)	$ 3,052	$ (72,741)	$ (70,312)
Net income (loss) per share attributable to common stockholders:
Basic	$ (0.05)	$ 0.00	$ (0.08)	$ (0.08)
Diluted	$ (0.05)	$ 0.00	$ (0.08)	$ (0.08)
Weighted average common shares used to compute net income (loss) per share attributable to common stockholders:
Basic	882,408	921,116	875,656	910,469
Diluted	882,408	940,032	875,656	910,469