Fortnite creator Epic Games has taken its fight against Apple to European Union antitrust regulators, escalating its dispute with the iPhone maker over its App Store payment system and control over app downloads. The two companies have been in a dispute since August, when the game maker tried to avoid Apple's 30 per cent fee on some in-app purchases on the App Store by launching its own in-app payment system. That prompted Apple to kick Epic's Fortnite game off the App Store and threaten to terminate an affiliated account that would have effectively blocked distribution of Unreal Engine, a software tool used by hundreds of app makers to create games. Epic Games founder and chief executive Tim Sweeney said Apple's control of its platform had tilted the level playing field. "The 30 per cent they charge as their app tax, they can make it 50 per cent or 90 per cent or 100 per cent. Under their theory of how these markets are structured, they have every right to do that," he told reporters. "Epic is not asking any court or regulator to change this 30 per cent to some other number, only to restore competition on IOS," he said, referring to Apple's mobile operating system. The company also accused Apple of barring rivals from launching their own gaming subscription service on its platform by preventing them from bundling several games together, even though its own Apple Arcade service does that. Apple said its rules applied equally to all developers and that Epic had violated them. "In ways a judge has described as deceptive and clandestine, Epic enabled a feature in its app, which was not reviewed or approved by Apple, and they did so with the express intent of violating the App Store guidelines that apply equally to every developer and protect customers," the company said in a statement. "Their reckless behaviour made pawns of customers, and we look forward to making this clear to the European Commission," it said. Epic Games' EU complaint drew support from lawmaker Rasmus Andresen at the European Parliament, which will in coming months seek to reinforce EU tech rules proposed by the Commission to rein in US tech giants. "We as legislators need to ensure that these platforms who act as gatekeepers in the digital market have to respect a predefined set of rules in order to guarantee fair competition and balanced market powers," he said in a statement. Apple has in recent months made changes to its practices by lowering fees for some developers and giving them a way to challenge its rulings. Such measures have not satisfied the company's critics. Fortnite is expected to return to the iPhone at some point in the mobile Safari browser as part of Nvidia's streaming game service. Epic first pursued legal action against Apple in the United States and the two parties have in recent weeks have been trading documents and conducting depositions ahead of a trial scheduled for May. The European Commission, which is investigating Apple's mobile payment system Apple Pay and the App Store, confirmed receipt of the complaint. "We will assess it based on our standard procedures," a Commission spokeswoman said. Epic Games has also complained to the UK Competition Appeal Tribunal and to the Australian watchdog. Big companies such as Microsoft, Spotify and Match Group have also criticised Apple's App Store fees and rules.