March 2020 MAU
According to RTrack analytics, Roblox hit 134M+ MAU in March of 2020. In January, RTrack data showed a MAU of 119M+ users in the 30 days preceding January 31st 2019, meaning an increase of around 15 million users in just 2 months, likely attributable to the coronavirus. Shown below is data from an August 2019 Business Insider article  and RTrack’s most recent data.
This hints at strong user growth for Roblox in terms of monthly active users, with a large jump in players.
RTrack’s value for March 2020 MAU is an estimate based on a randomly selected sample of 30,005 Roblox accounts.
RTrack does not make any claims as to the validity or accuracy of the values shown in this blog post, and is not associated with Roblox Corp. These values are not official Roblox figures and were not released by Roblox Corp.
 “Roblox has eclipsed Minecraft with 100 million users — highlighting the popularity of ‘digital hangouts'” As of 1st April 2020: https://www.businessinsider.com/roblox-user-growth-surpasses-minecraft-2019-8?r=US&IR=T