I traveled to Roblox's headquarters to do a demo of a new safety feature it says will help protect child users.

Roblox is one of the world’s most popular kids’ games, but lawsuits around the country allege predators are hiding in plain sight.

For the film’s success, Sauerberg and Foldberg credit Blichfeldt. “She was so well prepared and had so many ideas,” says Foldberg. “I was really, really blown away by her knowledge of genre films and ...