Epic Games' wildly popular multiplayer shooter game Fortnite is available again on Apple's App Store in the US from Tuesday, capping a ban of nearly five years and marking a major win for the video game company.

Epic Games, a US-based studio backed by China's Tencent, has been locked in a legal battle with Apple since 2020. Epic Games alleged the iPhone maker's practice of charging a commission of up to 30 percent on in-app payments violated US antitrust rules.

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Fortnite's return to Apple's iOS systems in the US follows an April 30 ruling by a federal judge saying that Apple violated a US court order that required the company to allow greater competition for app downloads and payment methods in its App Store. The ruling also said that Apple had failed to comply with the judge's prior injunction order and would be referred to federal prosecutors for a criminal contempt investigation.

Apple did not immediately respond to a Reuters request for comment on Fortnite's return to its App Store. "We back fam," Epic Games CEO Tim Sweeney posted on social media platform X.

Launched in 2017, Fortnite became an instant hit, drawing millions of players around the world thanks to its last-player-standing, "battle royale" format. At the time of the ban, Epic had 116 million users just on Apple's platform.

"For Epic Games this was a hard fought win that carried a very steep price and may be too late to boost its Fortnite game that is now past its prime," said Gil Luria, analyst at D.A. Davidson. "For Apple this is another crack in the armor that the services business relies on — the funneling of payments through Apple in order to charge developers for every transaction."

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Michael Ashley Schulman, chief investment officer at Running Point Capital Advisors, said this opened the door for subscription apps like Spotify and Netflix to claw back margin and for independent studios to monetize without having to pay Apple an extra commission, potentially reshaping iOS economics over the next 12-18 months.

Apple and Alphabet's Google had banned Fortnite from their stores in 2020 over a tussle about in-app payment guidelines. The game had already returned to Google's Android devices worldwide and iPhones in the EU last year.

The game title was also available on the Epic Games Store and AltStore in the European Union, Fortnite said on X on Tuesday.