Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make certain estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities and the related disclosures at the date of the consolidated financial statements, as well as the reported amounts of revenues and expenses during the periods presented. Estimates are used in several areas including, but not limited to, stock-based compensation and valuation of common stock warrants. The Company bases these estimates on historical experience and on various other assumptions that it believes are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying amounts of assets and liabilities. Actual results could differ materially from these estimates. Revenue Recognition The Company generates substantially all its revenues through its Skillz segment by providing a service to game developers aimed at improving the monetization of their game content. The monetization service provided by Skillz allows developers to offer multi-player competition to their end-users which increases end-user retention and engagement. Skillz provides developers with a software development kit (“SDK”) that they can download and integrate with their existing games. The SDK serves as a data interface between Skillz and the game developers that enables Skillz to provide monetization services to the developer. The Company recognizes revenue for its services in accordance with the FASB ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”). See Note 4, Revenue, for additional information. Cost of Revenue Cost of revenue primarily consists of third-party payment processing fees, server costs, amortization of developed technology, personnel expenses, direct software costs, amortization of internal use software, hosting expenses, and allocation of shared facility and other costs. Cash, Cash Equivalents, and Restricted Cash Cash and cash equivalents consist of cash, commercial paper, money market funds and U.S government agency securities with maturities of three months or less when purchased. Restricted cash maintained under an agreement that legally restricts the use of such funds is not included within cash and cash equivalents and is reported within other long-term assets and other current assets. For the year ended December 31, 2023, restricted cash of $10.0 million mainly relates to the letter of credit for the Company’s former headquarters in San Francisco and cash required to be held by our financial institution. For the year ended December 31, 2022, restricted cash of $2.9 million mainly relates to the letter of credit for the Company’s former headquarters in San Francisco. A reconciliation of the Company’s cash and cash equivalents in the consolidated balance sheets to cash, cash equivalents and restricted cash in the consolidated statement of cash flows as of December 31, 2023 and 2022 is as follows: December 31, 2023 2022 Cash $ 14,968 $ 130,068 Money market 287,060 232,448 Restricted cash classified as current asset 10,000 — Restricted cash classified as a non-current asset — 2,920 Cash, cash equivalents and restricted cash $ 312,028 $ 365,436 Concentrations of Credit Risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist of cash, cash equivalents, restricted cash, and marketable securities. Although the Company deposits its cash with multiple well-established financial institutions, the deposits, at times, may exceed federally insured limits. The Company has not experienced any losses on its deposits of cash and cash equivalents. Marketable securities primarily consist of corporate debt securities, asset backed securities and debt instruments issued by foreign governments. The Company limits the amount of credit exposure to any one issuer and monitors the financial condition of the financial institutions on a regular basis. Accounts Receivable, Net Accounts receivable, net, represents amounts recorded for programmatic media campaigns, net of an allowance for credit losses from our advertising revenue customers of our Aarki segment. The allowance for credit losses is recorded as an offset to accounts receivable and changes in such are classified as general and administrative expense in the consolidated statements of operations and comprehensive loss. The Company assesses collectability by reviewing accounts receivable on a collective basis where similar characteristics exist and on an individual basis when there are specific customers with known disputes or collectability issues. In determining the amount of the allowance for credit losses, the Company considers historical collectability based on past due status and makes judgments about the creditworthiness of customers based on ongoing credit evaluations. The Company also considers customer-specific information, current market conditions and reasonable and supportable forecasts of future economic conditions to inform adjustments to historical loss data. The Company’s provision for credit losses was $276.0 thousand and $54.0 thousand in 2023 and 2022, respectively, of which was not charged against the allowance for credit losses. Additionally in 2023, the Company did not recover any amounts previously written off. The allowance for credit losses was $49.0 thousand at December 31, 2023 and December 31, 2022. One customer accounted for 12% of the accounts receivable balance as of December 31, 2023 and two customers accounted for 24% and 14% of the accounts receivable balance as of December 31, 2022. Fair Value Measurement The Company applies fair value accounting for financial assets and liabilities and non-financial assets and liabilities that are recognized or disclosed at fair value in the consolidated financial statements on a recurring basis. The Company defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining fair value measurements for assets and liabilities, the Company considers the principal or most advantageous market in which it would transact and the market-based risk measurements or assumptions that market participants would use in pricing the asset or liability, such as risks inherent in valuation techniques, transfer restrictions and credit risk. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: Level 1 — Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 — Inputs reflect quoted prices for identical assets or liabilities in markets that are not active; quoted prices for similar assets or liabilities in active markets; inputs other than quoted prices that are observable for the assets or liabilities; or inputs that are derived principally from or corroborated by observable market data by correlation or other means. Level 3 — Unobservable inputs reflecting management’s estimate of assumptions incorporated in valuation techniques used to determine fair value. These assumptions are required to be consistent with market participant assumptions that are reasonably available. The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Certain financial instruments, including debt, are not measured at fair value on a recurring basis in the consolidated balance sheets. The fair value of debt was estimated using primarily level 2 inputs including quoted market prices or present value of future payments discounted by the market interest rates or the fixed rates based on current rates offered to the Company for debt with similar terms and maturities. Long-Lived Assets Long-lived assets consist of property and equipment with estimable useful lives subject to depreciation and amortization. The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. When impairment indicators are identified, the Company assesses its long-lived assets for impairment. Recoverability of an asset or asset group to be held and used is measured by a comparison of the carrying amount of an asset or asset group to the estimated undiscounted future cash flows expected to be generated by the asset or asset group. If the carrying amount of the asset or asset group exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset or asset group exceeds the fair value of the asset or asset group. On March 15, 2023, the Company completed the purchase of an office building in Las Vegas, Nevada for $11.5 million, with $10.5 million and $1.0 million allocated to building and land components, respectively. The building will be depreciated on a straight-line basis over its estimated useful life of 39 years. The land is not subject to depreciation. The building is being utilized as the Company’s headquarters effective in February 2024. During the year ended December 31, 2022, the Company recognized $12.5 million of amortization expense associated with finite-lived intangible assets, including developed technology, customer relationships, trademarks, and tradenames, in the consolidated statements of operations and comprehensive loss. As these finite-lived intangible assets were fully impaired and written off as of December 31, 2022, the Company did not recognize any amortization expense during the year ended December 31, 2023. The Company identified an impairment indicator and recorded impairment of its Aarki asset group during the third quarter of 2022. During the fourth quarter of 2022, additional indicators of impairment for both the Skillz and Aarki asset groups were identified, most notably sharp declines in the Company’s stock price and overall market capitalization, near the end of 2022, and secondarily, a downward revision to the Aarki business forecast and related expected cash flows attributable to the Aarki asset group. As a result of these indicators of impairment, in the fourth quarter of 2022, the Company reviewed the undiscounted future cash flows for the Skillz and Aarki asset groups, and the results of the analysis in each case indicated the carrying amount of the asset groups were not expected to be recovered. As a result, the Company performed analyses to estimate the fair value of the long-lived asset groups. The fair value of the Aarki asset group was estimated using an income approach. Under the income approach, a long-lived asset group’s fair value is equal to the present value of future economic benefits to be derived from ownership of the asset group. Indications of value are developed by discounting future net cash flows to their present value at market-based rates of return. Significant factors considered in the calculation of the fair value of the long-lived asset group were projected revenue, gross margins, operating expenses, the remaining economic life of the overall long-lived asset group based on the primary asset of the group, which was determined to be the developed technology, along with the discount rates used to derive the estimated present values of future cash flows. The Company applied judgement which involved the use of significant assumptions with respect to its income forecast such as the level and timing of future cash flows. The Company determined the fair value of the Aarki asset group was lower than its carrying values and recorded a long-lived asset impairment For the Skillz asset group, the Company reviewed undiscounted future cash flows for the asset group, and the results of the analysis indicated the carrying amount of the asset group was not expected to be recovered. The Company’s ROU asset related to its San Francisco office lease was the most significant asset of the Skillz long-lived asset group with the remaining long-lived assets consisting of an immaterial amount of property and equipment. The Company performed analyses to estimate the fair values of the assets within the Skillz asset group. For the ROU asset, the fair value was estimated based on key assumptions made by the Company including required construction costs, market rental rates, and expected vacancy period. The Company also determined that the fair value of the Skillz lease ROU asset was lower than its carrying value and recorded a long-lived asset impairment charge of $11.5 million during the year ended December 31, 2022. These non-cash charges were recorded within Impairment of goodwill and long-lived assets on the consolidated statements of operations and comprehensive loss. Investments The Company considers all highly liquid interest-earning investments with a maturity of three months or less at the date of purchase to be cash equivalents. The fair values of these investments approximate their carrying values. In general, investments with original maturities of greater than three months and remaining maturities of less than one year are classified as short-term investments. Investments with maturities beyond one year are classified as non-current marketable securities. Dividend and interest income are recognized when earned. Marketable securities are classified as available-for-sale and realized gains and losses are recorded using the specific identification method. Changes in fair value, excluding credit losses and impairments, are recorded in other comprehensive income (loss) in the consolidated statements of operations and comprehensive loss. Fair value is calculated based on publicly available market information or other estimates determined by management. If the cost of an investment exceeds its fair value, the Company evaluates, among other factors, general market conditions, credit quality of debt instrument issuers, and the extent to which the fair value is less than cost. To determine credit losses, the Company employs a systematic methodology that considers available quantitative and qualitative evidence. In addition, the Company considers specific adverse conditions related to the financial health of, and business outlook for, the investee. If the Company plans to sell the security or it is more likely than not that the Company will be required to sell the security before recovery, then a decline in fair value below cost is recorded as an impairment charge in other income (expense), net in the consolidated statements of operations and comprehensive loss and a new cost basis in the investment is established. If market, industry, and/or investee conditions deteriorate, the Company may incur future impairments. The Company has elected to measure its existing investments in non-marketable equity securities at cost, less impairments, with remeasurements to fair value only upon the occurrence of observable price changes in orderly transactions for the identical or similar securities of the same issuer (“measurement alternative”). This election is reassessed each reporting period to determine whether non-marketable equity securities have a readily determinable fair value, in which case they would no longer be eligible for this election and would be measured at fair value. The Company evaluates its non-marketable equity securities for impairment at each reporting period based on a qualitative assessment that considers various potential impairment indicators. Impairment indicators might include, but would not necessarily be limited to, a significant deterioration in the earnings performance, credit rating, asset quality, or business prospects of the investee, a significant adverse change in the regulatory, economic, or technological environment of the investee, a bona fide offer to purchase, an offer by the investee to sell, or a completed auction process for the same or similar securities for an amount less than the carrying amount of the investments in those securities. If an impairment exists, a loss is recognized in the consolidated statements of operations and comprehensive loss for the amount by which the carrying value exceeds the fair value of the investment. Gains and losses resulting from the remeasurement of non-marketable equity securities, including impairment, are recorded through other income (expense), net in the consolidated statements of operations and comprehensive loss. The Company separately presents investments in non-marketable equity securities within long-term assets on the consolidated balance sheets. Variable Interest Entities A variable interest entity ("VIE") is an entity that either (i) has insufficient equity to permit the entity to finance its activities without additional subordinated financial support, or (ii) has equity investors who lack the characteristics of a controlling financial interest. Under ASC 810 “Consolidation,” an entity that holds a variable interest in a VIE and meets certain requirements would be considered to be the primary beneficiary of the VIE and required to consolidate the VIE in its consolidated financial statements. In order to be considered the primary beneficiary of a VIE, an entity must hold a variable interest in the VIE and have both: • the power to direct the activities that most significantly impact the economic performance of the VIE; and • the right to receive benefits from, or the obligation to absorb losses of, the VIE that could be potentially significant to the VIE. The Company holds a cost method investment in Big Run Studios, Inc. (“Big Run”), a privately held variable interest entity and one of the Company’s top game developers. The Company determined that it is not the primary beneficiary as it does not have the power to direct the activities that most significantly impact the entity’s performance. As of December 31, 2022, the carrying value of the Company’s investment in Big Run was $2.9 million and was classified within non-marketable equity securities. During the year ended December 31, 2023, the Company fully impaired the carrying value of its investment in Big Run due to significant concerns about the entity’s ability to continue as a going concern. The Company also entered into a $2.0 million loan agreement with the entity for the purpose of allowing it to meet its cash flow needs which was fully repaid in 2024. See Note 5, Balance Sheet Components and Note 19, Subsequent Events. Goodwill In the year ended December 31, 2022, the Company recorded a goodwill impairment charge of $85.5 million. The impairment was driven primarily by a sharp decrease in the Company’s stock price and market capitalization during 2022, and lower forecasted operating results. Advertising and Promotional Expense Advertising and promotional expenses are included in sales and marketing expenses within the consolidated statements of operations and comprehensive loss and are expensed when incurred. For the years ended December 31, 2023 and 2022, advertising expenses, not including marketing promotions related to the Company’s end-user incentive programs, were $30.7 million and $118.8 million, respectively. Private Common Stock Warrant Liabilities As part of the closing of Flying Eagle Acquisition Corporation’s, a Delaware corporation (“FEAC”), initial public offering, FEAC completed the private sale of 501,667 warrants to FEAC’s sponsor at a purchase price of $30.00 per warrant (the “Private Warrants”). In connection with the FEAC Business Combination, FEAC’s sponsor agreed to forfeit 250,833 Private Warrants. Each Private Warrant allows the sponsor to purchase one share of Class A common stock at $230.00 per share. There were 226,786 Private Warrants outstanding as of December 31, 2023 and 2022. The Private Warrants and the shares of common stock issuable upon the exercise of the Private Warrants are not transferable, assignable or salable, subject to certain limited exceptions. Additionally, the Private Warrants are exercisable for cash or on a cashless basis, and are non-redeemable so long as they are held by the initial purchasers or their permitted transferees. If the Private Warrants are held by someone other than the initial purchasers or their permitted transferees, the Private Warrants will be redeemable by the Company and exercisable by such holders on the same basis as the Public Warrants. The Company evaluated the Private Common Stock Warrants under ASC 815-40, Derivatives and Hedging—Contracts in Entity’s Own Equity (“ASC 815-40”), and concluded that they do not meet the criteria to be classified in stockholders’ equity. Specifically, the exercise of the Private Common Stock Warrants may be settled in cash upon the occurrence of a tender offer or exchange that involves 50% or more of the Company’s Class A stockholders. As there are two classes of common stock, and not all of the stockholders need to participate in such tender offer or exchange to trigger the potential cash settlement and the Company does not control the occurrence of such an event, the Company concluded that the Private Warrants do not meet the conditions to be classified in equity. Since the Private Common Stock Warrants meet the definition of a derivative under ASC 815, the Company recorded these warrants as liabilities on the consolidated balance sheet at fair value, with subsequent changes in their respective fair values recognized in the consolidated statement of operations and comprehensive loss at each reporting date. The Private Warrants were valued using the Black-Scholes-Merton Option pricing model that is based on the individual characteristics of the warrants on the valuation date, which include the Company’s stock price and assumptions for expected volatility, expected life and risk-free interest rate, as well as the present value of the minimum cash payment component of the instrument for the warrants, when applicable. Changes in the assumptions used could have a material impact on the resulting fair value of each warrant. The primary inputs affecting the value of the warrant liability are the Company’s stock price and volatility in the Company's stock price, as well as assumptions about the probability and timing of certain events, such as a change in control or future equity offerings. Increases in the fair value of the underlying stock or increases in the volatility of the stock price generally result in a corresponding increase in the fair value of the warrant liability; conversely, decreases in the fair value of the underlying stock or decreases in the volatility of the stock price generally result in a corresponding decrease in the fair value of the warrant liability. Derivative Financial Instruments The Company does not use derivative instruments to hedge exposures to cash flow, market, or foreign currency risks. The Company evaluates all of its financial instruments, including its long-term debt to determine if such instruments are derivatives or contain features that qualify as embedded derivatives. Embedded derivatives must be separately measured from the host contract if all the requirements for bifurcation are met. The assessment of the conditions surrounding the bifurcation of embedded derivatives depends on the nature of the host contract. Bifurcated embedded derivatives and freestanding derivative financial instruments that are classified as assets or liabilities are recognized at fair value with changes in fair value recognized as a component of other income (expense), net in the consolidated statements of operations and comprehensive loss. Stock-Based Compensation The Company measures and recognizes compensation expense for all stock-based awards based on estimated grant-date fair values recognized over the requisite service period. For awards that vest solely based on a service condition, the Company recognizes stock-based compensation expense on a straight-line basis over the requisite service period. The compensation expense related to awards with performance conditions is recognized over the requisite service period when the performance conditions are probable of being achieved. The compensation expense related to awards with market conditions is recognized on an accelerated attribution basis over the requisite service period identified as the derived service period over which the market conditions are expected to be achieved and is not reversed if the market condition is not satisfied. See Note 14, Stock-Based Compensation, for more information. The Company accounts for forfeitures as they occur. If an employee stock-based award is canceled without the concurrent grant or offer of a replacement award, the cancellation is treated as a settlement for no consideration and any previously unrecognized compensation cost shall be recognized at the cancellation date. Stock-based awards granted to employees are primarily stock options and restricted stock units. The Company has primarily granted restricted stock units (“RSUs”), which have a service-based (and in certain circumstances, performance-based) vesting condition over a four-year period, to its employees and members of the Company’s Board of Directors (the “Board”) since the start of 2021. The Board determines the fair value of each share of underlying common stock based on the closing price of the Company's common stock on the date of the grant. For awards with market conditions, the Company determines the grant date fair value utilizing a Monte Carlo valuation model, which incorporates various assumptions including expected stock price volatility, expected term, risk-free interest rates, expected date of a qualifying event, expected capital raise percentage and market capitalization milestones. Given the Company’s limited market trading history, it has estimated the volatility of its common stock on the date of grant of awards with market conditions based on the weighted average historical stock price volatility of comparable publicly-traded companies in its industry group. The Company estimated the expected term of its awards with market conditions based on various exercise scenarios, as these awards are not considered “plain vanilla.” The Company utilized a risk-free interest rate based on the U.S. Treasury yield curve in effect at the time of grant. The Company estimated the expected date of a qualifying event, the expected capital raise percentage and the expected achievement date of market capitalization milestones based on management’s expectations at the time of measurement of the award’s value. Income Taxes The Company accounts for income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the financial statements or in the Company’s tax returns. Deferred income taxes are recognized for differences between financial reporting and tax bases of assets and liabilities at the enacted statutory tax rates in effect for the years in which the temporary differences are expected to reverse. The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date. Realization of deferred tax assets is dependent upon future earnings, the timing and amount of which are uncertain. The Company records a valuation allowance to reduce deferred tax assets to the net amount that the Company believes is more likely than not to be realized. In assessing the need for a valuation allowance, the Company considered historical levels of income, expectations of future taxable income and ongoing tax planning strategies. Because of the uncertainty of the realization of the deferred tax assets, the Company recorded a full valuation allowance against deferred tax assets. Realization of deferred tax assets is dependent primarily upon future U.S. taxable income. The Company utilizes a two-step approach to recognize and measure uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained upon tax authority examination, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement. Although the Company believes it has adequately reserved for uncertain tax positions, management can provide no assurance that the final tax outcome of these matters will not be materially different. The Company evaluates its uncertain tax position on a regular basis and evaluations are based on a number of factors, including changes in facts and circumstances, changes in tax law, correspondence with tax authorities during the course of an audit and effective settlement of audit issues. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will affect the provision for income taxes in the period in which such determination is made and could have a material impact on the Company’s financial condition and operating results. The provision for income taxes includes the effects of any accruals that the Company believes are appropriate, as well as the related net interest and penalties. The Company accounts for taxes due on future U.S. inclusions in taxable income under the Global Intangible Low-Taxed Income (“GILTI”) provision as a current-period expense when incurred. Property and Equipment, Net Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is computed using the straight-line method over the estimated useful life of the related asset, generally three Property and equipment are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. Recoverability of these assets is measured by a comparison of the carrying amounts to the future undiscounted cash flows the assets are expected to generate. If property and equipment are considered to be impaired, the impairment to be recognized equals the amount by which the carrying value of the asset exceeds its fair value. Refer to Long-lived Assets above for impairment of long-lived assets. The Company capitalizes certain costs related to developed or modified software solely for the Company’s internal use to deliver the Company’s services. The Company capitalizes costs during the application development stage once the preliminary project stage is complete, management authorizes and commits to funding the project, it is probable that the project will be completed, and that the software will be used to perform the function intended. Costs related to preliminary project activities and post-implementation activities are expensed as incurred. The following table presents the estimated useful lives of the Company’s property and equipment: Property and Equipment Useful Life Buildings 39 years Computer equipment and servers 3 years Capitalized internal-use software 3 years Office equipment and other 5 years Leased equipment and leasehold improvements Lesser of estimated useful life or Leases The Company accounted for leases in accordance with Accounting Standards Update Topic 842 (“ASC 842”). Under ASC 842, the Company determines if an arrangement is a lease at inception. ROU assets and lease liabilities are recognized at commencement date based on the present value of remaining lease payments over the lease term. For this purpose, the Company considers lease payments that are fixed at the time of commencement. As most of the Company’s leases do not provide an implicit rate, it uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The determination of an appropriate incremental borrowing rate requires judgment. The Company determines its incremental borrowing rate based on publicly available data for instruments with similar characteristics, including recent |