United Kingdom, May 20 -- Child safety campaigners in the United States have urged regulators to investigate Roblox Corporation over concerns surrounding child safety, spending systems and communication features on its hugely popular gaming platform.

Advocacy organisations Fairplay and the National Center on Sexual Exploitation have filed a complaint with the Federal Trade Commission (FTC), accusing Roblox of using what they describe as "unfair and deceptive" practices that place younger users at risk.

A major focus of the complaint centres on Roblox's in-game economy. Players can purchase virtual currency, Robux, to buy avatar cosmetics, game passes and upgrades. Campaigners argue the system is difficult for children to understand and ...