Roblox is the most popular game for children under 13 right now. But some charities and safety experts say that more children are finding upsetting and abusive content on the site. Newsround's ...

Roblox has since banned the developer of the game and denied its platform ever featured the sex tape. A spokesperson said: "The referenced video was never available on our platform.

Roblox's mission, according to its website, "is to bring the world together through play". But the company has faced criticism for the explicit content that sometimes appears on its app.

It’s been confirmed that 'Roblox' is involved in an “active investigation” by the US Government's Securities and Exchange Commission. The game is involved in an ongoing case by the SEC.