It has been one of the most popular video games since its initial release in 2017, with hundreds of millions of players counted worldwide.
Fortnite, a "battle royale" game, combining a survival game and a shooter, has just been pinned by the American Consumer Protection Agency (FTC).
Its American publisher, Epic Games, will thus have to pay 520 million dollars as part of an agreement with this agency.
She accused him of not having sufficiently protected underage players of his flagship game, Fortnite, according to a press release published on Monday.
Part of the sum, or $275 million, relates to grievances relating to the collection of data relating to underage players as well as their exposure to adults.
The rest, or 245 million, relates to purchases made in the game by underage players, who were not aware of making a payment.
According to the PEGI - Pan European Game Information - classification, which is based on the presence of sensitive content and is approved by the public authorities, Fortnite is not recommended for people under 12, due to "frequent scenes of moderate violence".