#1ROBLOX Q3 | 2021 Q3 2021 Supplemental Materials November 8, 2021 1#2ROBLOX Q3 | 2021 Forward-Looking Statements This presentation contains "forward-looking statements" within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995, including but not limited to, statements regarding our estimated monthly metrics, product development, investment strategy, business strategy and plans. These forward-looking statements are made as of the date they were first issued and were based on current expectations, estimates, forecasts, and projections as well as the beliefs and assumptions of management. Words such as "expect," "anticipate," "should," "believe," "hope," "target," "project," "plan," "goals," "estimate," "potential," "predict," "may," "will," "might," "could," "intend," "shall," and variations of these terms or the negative of these terms and similar expressions are intended to identify these forward-looking statements. Forward-looking statements are subject to a number of risks and uncertainties, many of which involve factors or circumstances that are beyond our control. Our actual results could differ materially from those stated or implied in forward-looking statements due to a number of factors, including but not limited to risks detailed in our Quarterly Report on Form 10-Q filed for the fiscal quarter ended September 30, 2021 and other filings and reports we make with the SEC from time to time. In particular, the following factors, among others, could cause results to differ materially from those expressed or implied by such forward-looking statements: our ability to successfully execute our business and growth strategy; the sufficiency of our cash and cash equivalents to meet our liquidity needs; the impact of our senior notes and any future indebtedness on our business, financial condition and results of operations; the demand for our platform in general; our ability to increase our number of new users and revenue generated from users; our ability to retain and expand our user base; the impact on our business of the COVID-19 pandemic restrictions and the easing of those restrictions as vaccinations become more prevalent; the fluctuation of our results of operations and our key business measures on a quarterly basis in future periods; our ability to successfully develop and deploy new technologies to address the needs of our users; our ability to maintain and enhance our brand and reputation; our ability to hire and retain talent; news or social media coverage about Roblox, including but not limited to coverage that presents, or relies on, inaccurate, misleading, incomplete, or otherwise damaging information; and any breach or access to user or third-party data. Additional information regarding these and other risks and uncertainties that could cause actual results to differ materially from our expectations is included in the reports we have filed or will file with the SEC, including our Quarterly Report Form 10-Q for the fiscal quarter ended September 30, 2021. The forward-looking statements included in this presentation represent our views as of the date of this presentation. We anticipate that subsequent events and developments will cause our views to change. We undertake no intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. These forward-looking statements should not be relied upon as representing our views as of any date subsequent to the date of this presentation. Past performance is not necessarily indicative of future results. 2#3Non-GAAP Financial Measures ROBLOX Q3 | 2021 This presentation contains the non-GAAP financial measures bookings, free cash flow, and Adjusted EBITDA. We use this non-GAAP financial information to evaluate our ongoing operations, for internal planning and forecasting purposes, and ongoing operating trends for purposes of analyzing the covenants specified in the indenture governing our senior notes due 2030. We believe that this non-GAAP financial information may be helpful to investors because it provides consistency and comparability with past financial performance. Bookings is defined as revenue plus the change in deferred revenue during the period and other non-cash adjustments. Bookings is equal to the amount of virtual currency purchased by users in a given period of measurement. We believe bookings provide a timelier indication of trends in our operating results that are not necessarily reflected in our revenue as a result of the fact that we recognize the majority of revenue over the estimated average lifetime of a paying user. The change in deferred revenue constitutes the vast majority of the reconciling difference from revenue to bookings. By removing these non-cash adjustments, we are able to measure and monitor our business performance based on the timing of actual transactions with our users and the cash that is generated from these transactions. Free cash flow represents the net cash provided by operating activities less purchases of property, equipment, and intangible assets. We believe that free cash flow is a useful indicator of our unit economics and liquidity that provides information to management and investors about the amount of cash generated from our core operations that, after the purchases of property, equipment, and intangible assets, can be used for strategic initiatives, including investing in our business, making strategic acquisitions, and strengthening our balance sheet. Adjusted EBITDA is a measure of operating performance used in certain covenant calculations specified in the indenture governing our senior notes due 2030 that is not calculated in accordance with GAAP and may not conform to the calculation of EBITDA in other circumstances. Adjusted EBITDA should not be considered as a substitute for net loss as determined in accordance with GAAP. We believe that, when considered together with reported amounts, Adjusted EBITDA is useful to investors and management in understanding our ongoing operations and ongoing operating trends for purposes of analyzing the covenants specified in the indenture governing our senior notes due 2030. Non-GAAP financial measures have limitations in their usefulness to investors because they have no standardized meaning prescribed by GAAP and are not prepared under any comprehensive set of accounting rules or principles. In addition, other companies, including companies in our industry, may calculate similarly titled non-GAAP financial measures differently or may use other measures to evaluate their performance, all of which could reduce the usefulness of our non-GAAP financial information as a tool for comparison. As a result, our non-GAAP financial information is presented for supplemental informational purposes only and should not be considered in isolation from, or as a substitute for financial information presented in accordance with GAAP. A reconciliation table of the most comparable GAAP financial measure to each non-GAAP financial measure used in this presentation is included at the end of this presentation. We encourage investors and others to review our business, results of operations, and financial information in their entirety, not to rely on any single financial measure, and to view these non-GAAP measures in conjunction with the most directly comparable GAAP financial measure. 3#4Revenue, Deferred Revenue, and Bookings Illustration The following example illustrates GAAP revenue recognition for bookings on the Roblox platform. 4 User spends $25 on the Roblox platform to purchase 2,500 Robux User spends Robux (on average, within 3 days¹) on the platform to purchase: Durable Virtual Items² = 2,300 Robux, or $23 Revenue recognized by month $1 GAAP Revenue Recognition Revenue is recognized over lifetime of paying user³ $23 bookings / 23 months³ = $1 per month Month 1 $1/month ($22 deferred) Months 2-23 Consumable Virtual Items² = 200 Robux, or $2 GAAP Revenue Recognition Revenue is recognized immediately upon consumption $2 bookings in month of purchase ROBLOX Q3 | 2021 Recognized in Month 1 Bookings recognized = $25 Revenue recognized = $1 (associated with durable items) Deferred Revenue at end of Month 1 = $22 (to be recognized as revenue in months 2-23) Revenue recognized = $2 (associated with consumable items) Recognized in Month 1: Total Revenue recognized ($3) + Deferred Revenue ($22) = Bookings ($25) 'Average number of days it takes our users to spend Robux upon purchase 2For the three months ended September 30, 2021, durable virtual items accounted for 88% of Roblox platform revenue and consumable virtual items accounted for 12%. For the purpose of the example, we did not apply these exact percentages. ³For the three months ended September 30, 2021 the average lifetime for a paying user was 23 months.#5Revenue ($ in millions, unaudited) Year over year growth % 5 $110.5 74% 1019 $119.2 58% 2Q19 $131.1 51% $161.6 $147.6 48% $200.4 46% 68% $251.9 92% $310.0 110% 3Q19 4Q19 1Q20 2Q20 3Q20 4Q20 $387.0 140% $454.1 127% $509.3 102% 1Q21 2Q21 3Q21 ROBLOX Q3 | 2021#6Four Main Expense Buckets 6 Cost of Revenue Developer Exchange Fees 'Costs exclude stock-based compensation expense 2Costs exclude personnel, stock-based compensation and depreciation expenses. Personnel Costs excl. Stock-Based Compensation¹ ROBLOX Q3 | 2021 Certain Infrastructure and Trust & Safety²#7Cost of Revenue ($ in millions, unaudited) Year over year growth % 7 $25.9 88% 1Q19 $27.7 66% 2Q19 $31.6 61% $37.2 62% $41.8 62% $53.7 94% $65.8 108% $78.6 111% 3Q19 4Q19 1Q20 2Q20 3Q20 4Q20 $97.9 134% $116.9 118% $130.0 98% 1Q21 2Q21 3Q21 ROBLOX Q3 | 2021#8Developer Exchange Fees ($ in millions, unaudited) Year over year growth % 8 % of Revenue % of Bookings¹ $22.7 $23.3 40% 1Q19 21% 16% 41% 20% $26.2 2Q19 3Q19 15% 46% 20% 16% $39.8 88% 4Q19 27% 17% $44.5 96% 1Q20 28% 18% $85.1 $85.5 265% 42% 226% 17% 2Q20 3Q20 4Q20 34% $113.7 17% 186% 37% 18% $118.9 167% 1Q21 31% 18% $129.7 53% 2Q21 29% 19% $130.0 52% 3Q21 26% 20% ROBLOX Q3 | 2021 'Bookings is a non-GAAP financial measure that we believe is useful in evaluating our performance and is presented for supplemental information purposes only and should not be considered in isolation from, or as a substitute for, financial information presented in accordance with GAAP. For further information, please refer to reconciliation slides within the presentation and our annual and quarterly SEC filings.#9Personnel Costs excl. Stock-Based Compensation ($ in millions, unaudited) Year over year growth % 9 Headcount $28.0 67% 1Q19 $31.3 52% $35.3 $38.7 47% 555 27% $42.6 52% 610 26% $49.4 58% 670 26% $54.8 56% $66.9 73% $89.5 (¹) 110% 1,008 22% $93.7 43% 2Q19 3Q19 4Q19 1Q20 2Q20 3Q20 4Q20 1Q21 2Q21 3Q21 90% 459 495 751 865 1,133 1,234 1,435 % of Revenue 25% 26% 25% 22% 23% 21% 20% 21% 21% 16% 17% 10% 11% 10% 14% 14% 16% % of Bookings² 20% ¹1Q21 expenses includes roughly $13.0 million in employer taxes associated with transactions performed in connection with our Direct Listing. Excluding this item, Personnel expenses excl. Stock-Based Compensation would be $76.5 million for the period (80% year on year). ²Bookings is a non-GAAP financial measure that we believe is useful in evaluating our performance and is presented for supplemental information purposes only and should not be considered in isolation from, or as a substitute for, financial information presented in accordance with GAAP. For further information, please refer to reconciliation slides within the presentation and our annual and quarterly SEC filings. $102.8 87% ROBLOX Q3 | 2021#10Certain Infrastructure and Trust & Safety¹ ($ in millions, unaudited) Year over year growth % 10 % of Revenue $24.0 60% 1019 22% $26.5 18% 2Q19 22% $28.7 $30.5 22% $34.8 21% 45% $44.9 22% 69% 37% 40% 3Q19 4Q19 1Q20 2Q20 3Q20 4Q20 22% $52.0 81% 9% 21% $55.7 82% 10% 18% $64.0 9% 84% 17% $75.6 1Q21 2Q21 69% 10% 17% $82.6 17% 18% 17% 13% % of Bookings² 14% 'Infrastructure and Trust & Safety excluding personnel, stock-based compensation, and depreciation expense. 2Bookings is a non-GAAP financial measure that we believe is useful in evaluating our performance and is presented for supplemental information purposes only and should not be considered in isolation from, or as a substitute for, financial information presented in accordance with GAAP. For further information, please refer to reconciliation slides within the presentation and our annual and quarterly SEC filings. 11% 59% 3Q21 16% ROBLOX Q3 | 2021 13%#11GAAP Net Loss ($ in thousands, unaudited) 11 Revenue Cost of revenue Developer exchange fees Infrastructure & trust and safety Research and development General and administrative Sales and marketing Total cost and expenses Loss from operations Interest income Other expense Loss before provision for income taxes Provision (benefit) for income taxes 3 Months ended 9/30/2021 $509,336 130,015 129,952 117,387 138,245 51,584 19,599 586,782 (77,446) 28 (770) (78,188) (998) (77,190) (3,188) 9/30/2020 $251,914 65,818 85,475 71,405 51,708 16,168 12,858 303,432 (51,518) 217 1,306 (49,995) 19 ROBLOX Q3 | 2021 Consolidated net loss Net loss attributable to the noncontrolling interest Net loss attributable to common stockholders $ (74,002) $ (48,613) As of September 30, 2021, we had 578.5 million shares of common stock outstanding, and 82.2 million shares of potentially dilutive common stock consisting of RSUS, unregistered RSA's, in-the-money options, warrants and ESPP outstanding. The CEO long-term performance award of 11.5 million RSUS is excluded from the potentially dilutive share count because the Company Stock Price Target had not been met as of September 30, 2021. (50,014) (1,401)#12Non-GAAP Financial Discussion 12 ROBLOX Q3 | 2021#13Non-GAAP Financial Measures Reconciliation Revenue to Bookings ($ in thousands, unaudited) Revenue Add (deduct): Change in deferred revenue Other Bookings 13 3 Months ended 9/30/2021 9/30/2020 $509,336 131,439 (2,942) $637,833 $ 251,914 246,567 (1,996) $496,485 9/30/2019 $ 131,139 34,793 (555) $165,377 2020 to 2021 YOY% 102% -47% 47% 28% ROBLOX Q3 | 2021 2019 to 2021 CAGR 97% 94% 130% 96% Note: Bookings is a non-GAAP financial measure that we believe is useful in evaluating our performance and is presented for supplemental information purposes only and should not be considered in isolation from, or as a substitute for, financial information presented in accordance with GAAP. For further information, please refer to reconciliation slides within the presentation and our annual and quarterly SEC filings.#14Bookings ($ in millions, unaudited) Year over year growth % 14 $142.3 $150.3 28% $165.4 $236.3 66% $494.2 $496.5 $249.6 229% L 75% 200% $652.3 $642.3 172% 161% $665.5 35% 39% 1Q19 2Q19 3Q19 4Q19 1Q20 2Q20 3Q20 4Q20 1Q21 2Q21 $637.8 28% 3Q21 ROBLOX Q3 | 2021 Note: Bookings is a non-GAAP financial measure that we believe is useful in evaluating our performance and is presented for supplemental information purposes only and should not be considered in isolation from, or as a substitute for, financial information presented in accordance with GAAP. For further information, please refer to reconciliation slides within the presentation and our annual and quarterly SEC filings.