Roblox sex games are commonly referred to on the platform as "condos". They're spaces, generated by users, where people can talk about sex - and where their avatars can have virtual sex.

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, an online game platform for adults and children, has an estimated 150 million monthly active users. After a BBC investigation raised concerns about some explicit content, experts share how ...