The creator of “Blue Lock: Rivals” thought kids on Roblox might like a soccer video game with an anime vibe. It sold a few months later for more than $3 million. The 19-year-old, who asked that his ...

Mattel is launching “Monster High” inspired video games in Roblox and Fortnite as part of the toy company’s larger effort to bolster its in-house game development business and move beyond licensed ...