LA County says the gaming company does not carry out adequate moderation and its age-verification systems are not fit for purpose, which Roblox denies

Officials in Los Angeles have said they are suing Roblox, alleging the popular online platform exposes children to sexual content, exploitation and online predators.

In a lawsuit, Los Angeles County said the company does not carry out adequate moderation and its age-verification systems are not fit for purpose.

Rosen, who led Sega from the 1960s into the 90s and who died on Christmas Day, was a hugely important figure in the history of arcade and home gaming

It is difficult to think of a more influential figure in the arcade game industry than David Rosen, who has died aged 95. The co-founder of Sega, who remained a director of the company until 1996, was instrumental in the birth and rise of the video game business in Japan, and in the 1980s and 90s oversaw the establishment of Sega of America and the huge success of the Mega Drive console.

As a US Air Force pilot during the Korean war, Rosen found himself stationed in Japan, and once the conflict was over, he stayed on, intrigued by the country and seeing possibilities in its recovering economy. In 1954 he set up Rosen Enterprises and noticing that Japanese civilians now required an increasing number of new ID cards he started importing photo booths from the US to answer the demand. From here he expanded to pinball tables and other coin-operated machines, importing them for installation in shops, restaurants and cinemas. In 1965, he merged the company with another importer, Nihon Goraku Bussan, whose coin-op business Service Games was shortened to Sega for the new venture.