Roblox presents itself to parents as a safe space for kids. Behind the scenes, it's waging a technological shadow war against condo games: digital sex parties where kids are flirting with danger.

Roblox said last year that it had 64 million players A popular children's video game has blamed a virtual "gang rape" on a hack of its systems.

Swedish games studio The Gang has launched an analytics tool for Roblox’s user-generated content, called UGC Insight.