Games trade body Ukie said all its members "take their responsibility to their players, particularly children, very seriously".
Ukie chief executive Jo Twist said:
We welcome any guidance from the OFT [Office of Fair Trading] to clarify how they are interpreting the law and shall be taking our time to digest the proposed guidelines before responding fully to the OFT’s consultation.
More top news
Kurt Cochran and his wife Melissa had been visiting London from the US to celebrate their 25th wedding anniversary and were due to fly home.
The Government has previously described the new coin - which enters circulation tomorrow - as "harder to counterfeit than ever before".
The European bloc said that Russia should release hundreds of people it arrested at anti-government protests and rallies.