Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net Revenue:
Total net revenue	$ 356,073	$ 250,101	$ 676,839	$ 456,763
Cost of Revenue:
Total cost of revenue	209,237	135,892	388,902	241,663
Gross Profit:
Total gross profit	146,836	114,209	287,937	215,100
Operating Expenses:
Research and development	84,387	61,994	172,665	117,732
Sales and marketing	64,164	36,568	132,412	70,375
General and administrative	40,494	26,033	80,234	48,119
Total operating expenses	189,045	124,595	385,311	236,226
Loss from Operations	(42,209)	(10,386)	(97,374)	(21,126)
Other Income, Net:
Interest expense	(1,034)	(571)	(1,897)	(669)
Other income, net	557	1,240	1,818	2,207
Total other income (expense), net	(477)	669	(79)	1,538
Loss Before Income Taxes	(42,686)	(9,717)	(97,453)	(19,588)
Income tax (benefit) expense	462	(384)	307	(523)
Net Loss	$ (43,148)	$ (9,333)	$ (97,760)	$ (19,065)
Net loss per share —basic and diluted	$ (0.35)	$ (0.08)	$ (0.81)	$ (0.17)
Weighted-average shares used in computing net loss per share —basic and diluted	122,614	114,572	121,397	112,734
Platform | Services
Net Revenue:
Total net revenue	$ 244,777	$ 167,682	$ 477,334	$ 301,835
Cost of Revenue:
Total cost of revenue	106,324	57,980	208,260	98,344
Gross Profit:
Total gross profit	138,453	109,702	269,074	203,491
Player | Goods
Net Revenue:
Total net revenue	111,296	82,419	199,505	154,928
Cost of Revenue:
Total cost of revenue	102,913	77,912	180,642	143,319
Gross Profit:
Total gross profit	$ 8,383	$ 4,507	$ 18,863	$ 11,609