CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Old Skillz Common Stock	Old Skillz Preferred Stock	Preferred Stock Warrants	Common Stock Warrants	Common stock	Common stock Old Skillz Common Stock	Common stock Old Skillz Preferred Stock	Common stock Preferred Stock Warrants	Common stock Common Stock Warrants	Additional paid-in capital	Additional paid-in capital Preferred Stock Warrants	Additional paid-in capital Common Stock Warrants	Accumulated Other Comprehensive Income (Loss)	Accumulated deficit	Accumulated deficit Old Skillz Common Stock	Accumulated deficit Old Skillz Preferred Stock
Shares, beginning balance (in shares) at Dec. 31, 2018						249,900,176
Beginning balance at Dec. 31, 2018	$ 1,076					$ 25					$ 67,702			$ 0	$ (66,651)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of redeemable convertible preferred stock (in shares)						23,718,385
Issuance of redeemable convertible preferred stock	39,760					$ 3					39,757
Issuance of common stock upon exercise of stock options (in shares)						3,485,844
Issuance of common stock upon exercise of stock options	197										197
Issuance of Old Skillz common stock upon early exercise of stock options with promissory note (in shares)						8,970,518
Issuance of Old Skillz common stock upon early exercise of stock options with promissory note	0					$ 1					(1)
Stock-based compensation	1,237										1,237
Net loss	(23,605)														(23,605)
Other comprehensive loss	0
Shares, ending balance (in shares) at Dec. 31, 2019						286,074,923
Ending balance at Dec. 31, 2019	18,665					$ 29					108,892			0	(90,256)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of redeemable convertible preferred stock (in shares)						17,834,808
Issuance of redeemable convertible preferred stock	98,305					$ 2					98,303
Issuance of common stock upon exercise of stock options (in shares)						7,642,110
Issuance of common stock upon exercise of stock options	1,243					$ 1					1,242
Issuance of Old Skillz common stock upon early exercise of stock options with promissory note (in shares)						12,700,358
Issuance of Old Skillz common stock upon early exercise of stock options with promissory note	0					$ 1					(1)
Stock-based compensation	23,757										23,757
Net loss	(145,510)														(145,510)
Conversion of Old Skillz preferred stock warrants	654										654
Surrender of common stock upon net settlement of promissory note (in shares)						(1,037,535)
Taxes paid related to net share settlement of equity awards (in shares)						(1,102,746)
Taxes paid related to net share settlement of equity awards	(13,404)										(13,404)
Issuance of stock upon exercise of warrants (in shares)									2,860,974	726,063
Issuance of stock upon exercise of warrants				$ 2	$ 382				$ 1			$ 1	$ 382
Repurchase of Old Skillz stock (in shares)							(468,270)	(13,739)
Repurchase of Old Skillz stock		$ (1,339)	$ (1,211)					$ (1)								$ (1,339)	$ (1,210)
Net Business Combination and PIPE financing (Restated) (in shares)						44,580,578
Net Business Combination and PIPE financing	75,243					$ 4					75,239
Other comprehensive loss	0
Shares, ending balance (in shares) at Dec. 31, 2020						369,797,524
Ending balance at Dec. 31, 2020	56,787					$ 37					295,065			0	(238,315)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of redeemable convertible preferred stock (in shares)						17,000,000
Issuance of redeemable convertible preferred stock	$ 402,041					$ 3					402,038
Issuance of common stock upon exercise of stock options (in shares)	5,850,228					5,968,161
Issuance of common stock upon exercise of stock options	$ 3,883										3,883
Stock-based compensation	60,331										60,331
Net loss	(181,377)														(181,377)
Issuance of stock upon exercise of warrants (in shares)						11,586,519
Issuance of stock upon exercise of warrants	215,311										215,311
Issuance of common stock for business combination (in shares)						4,401,633
Issuance of common stock for business combination	66,972										66,972
Other comprehensive loss	(248)													(248)
Shares, ending balance (in shares) at Dec. 31, 2021						408,754,000
Ending balance at Dec. 31, 2021	$ 623,700					$ 40					$ 1,043,600			$ (248)	$ (419,692)