Citizens Advice has called for OFT guidelines to back strong enforcement for online games that try to pressure players into making purchases.
The service said one man it helped had been landed with a £200 bill racked up on a game played by his 10-year-old son, and was told the only way to get his money back would be to sue the child.
The scandal of online games which try to pressure or trick players into making extra purchases must end.
We've seen parents turning to us after their children inadvertently run up huge bills for downloads, so we welcome the OFT's moves to clamp down on the practice.
More top news
A 93-year-old Second World War veteran has flown over 10,000 miles to be reunited with his wartime sweetheart more than 70 years on.
The Republican presidential candidate is known for making some "interesting" comments - but can you guess who made these?
Twitter has announced changes to its timeline which will mean you see the "most important" tweets first.