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 sees its Game Fund as a way to support impressive, visually exciting games that mostly don’t look or even work like what the platform is known for.

Like YouTube, Roblox started as an online stage for young creators. As the company grows toward 100 million active daily users, contributors are making big money selling games.

A BBC investigation has found virtual sex parties are taking place in a popular online children’s game.