Roblox, the popular online game for children, is under fire over allegations that it has failed to protect kids from sexual ...

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.

In just under two months, a Roblox user-created game called Grow a Garden has become a massive hit.

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 Roblox game reaches an impressive milestone relatively soon after its release, beating some of the platform's most popular games.