Millions of children have flocked to the online gaming site Roblox since March. That’s helping game developers, some as young as 16, make a lot of money. Garvey Mortley, 12, with her mother ...

Roblox Corp., which built its reputation on games for tweens, thinks it can win over middle-aged workers. During the company’s first investor day Friday, Roblox said it wants to turn its gaming ...

Roblox hosts millions of games that are built by its users, who then get a share of any related revenue. Two thirds of all US kids 9 to 12 years use the platform, according to the company.