Reports it plans the biggest listing ever sent the shares of firms in its orbit soaring in US trade on Wednesday.

The ruling could be the beginning of the end of social media as we know it, writes the BBC's technology editor Zoe Kleinman.

Roblox said safety was a top priority and it had advanced safeguards in place to keep users safe.

US District Judge Jane Boyle said the company had failed to show it had suffered any harm under federal competition laws.