Crypto casinos are similar to 'normal' online casinos, offering virtual versions of popular games like slot machines. The difference is they use digital currencies: players convert pounds, euros and dollars into virtual cash such as Bitcoin to gamble with.

But while a concession has been made, Microsoft will now control games such as Call of Duty, World of Warcraft, and Candy Crush that will provide the firm with huge revenues. The CMA said the revised deal would "preserve competitive prices" in the gaming industry and provide more choice and better services.

It was developed by an EA studio, published by EA and maintained by EA. EA does not own Call of Duty. Activision owns Call of Duty.