In the charge, Apple accuses Epic Games of theft by putting its own payment system in the Fortnite app. With this, Epic bypassed the payment rules of the App Store. The rules state that developers must pay 30 percent of all their digital purchases to Apple.

"Epic's breaches of contractual obligations and other misconduct has seriously harmed Apple," Apple writes in the indictment. "With this, the company threatens the entire iOS ecosystem and its value to customers."

According to Apple, Epic has benefited greatly from promoting Fortnite through the App Store. The game is said to have earned more than 600 million dollars (509 million euros) on iOS. Apple is asking a court in California to determine that Epic Games is guilty of a violation of the App Store rules. The company is also asking for compensation.

Apple and Epic Games are at odds
Epic Games sued Apple in August after the company removed Fortnite from its app store for adding its own payment system. Epic accuses Apple of abuse of power and wants to enforce through the courts that the rules of the App Store are adjusted. The company calls the 30 percent commission far too high. Apple called it "regrettable" that the game company was breaking the rules. According to Apple, those rules are there to keep users safe. Running payments through the App Store would reduce the chances of scams or other issues.

Epic can respond to Apple's charges until September 18. A hearing will take place on September 28.