(Bloomberg) -- Brookhaven RP, the most popular title on Roblox Corp.’s video-game service, was sold by its mystery creator to Voldex Entertainment Ltd., a startup that specializes in developing ...

In just under two months, a Roblox user-created game called Grow a Garden has become a massive hit.

Like YouTube, Roblox started as an online stage for young creators. As the company grows toward 100 million active daily users, contributors are making big money selling games.