Roblox Results Presentation Deck

Note Regarding Operating Metrics We manage our business by tracking several operating metrics, including: daily active users, or DAUS, and hours engaged. As a management team, we believe each of these operating metrics provides useful information to investors and others. For information concerning these metrics as measured by us, see "Management's Discussion and Analysis of Financial Condition and Results of Operations." ROBLOX Q1 2021 While these metrics are based on what we believe to be reasonable estimates of our user base for the applicable period of measurement, there are inherent challenges in measuring how our platform is used. These metrics are determined by using internal data gathered on an analytics platform that we developed and operate and have not been validated by an independent third party. This platform tracks user account and session activity. If we fail to maintain an effective analytics platform, our metrics calculations may be inaccurate. We believe that these metrics are reasonable estimates of our user base for the applicable period of measurement, and that the methodologies we employ and update from time-to-time to create these metrics are reasonable bases to identify trends in user behavior. Because we update the methodologies we employ to create our metrics, our DAUS or other metrics may not be comparable to those in prior periods. Additionally, the accuracy of these metrics may be affected by certain factors relating to user activity and systems and our ability to identify and detect attempts to replicate legitimate user activity, often referred to as botting. Daily active users, or DAUS We define a DAU as a user who has logged in and visited Roblox through our website or application on a unique registered account on a given calendar day. If a registered, logged in user visits Roblox more than once within a 24-hour period that spans two calendar days, that user is counted as a DAU only for the first calendar day. We believe this method better reflects global engagement on the platform compared to a method based purely on a calendar-day cutoff. DAUS for a specified period is the average of the DAUS for each day during that period, so 30 days, for example, in the month of September. Other companies, including companies in our industry, may calculate DAUS differently. We track DAUS as an indicator of the size of the audience engaged on our platform. DAUS are also broken out by geographic region to help us understand the global engagement on our platform. The geographic location data collected is based on the IP address associated with the account when an account is initially registered on Roblox. The IP address may not always accurately reflect a user's actual location at the time they engaged with our platform. We do not collect the geographic location of our Xbox users, which are grouped into Rest of World DAUS for the purposes of our reporting. Because DAUs measure account activity and an individual user may actively use our platform within a particular day on multiple accounts for which that individual registered, our DAU metric is not a measure of unique individuals accessing Roblox. Additionally, if undetected, fraud and unauthorized access to our platform may contribute, from time to time, to an overstatement of DAUS. In many cases, fraudulent accounts are created by bots to inflate user activity for a particular developer's content on our platform, thus making the developer's experience or other content appear more popular than it really is. We strive to detect and minimize fraud and unauthorized access to our platform. 29

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