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Steam Officially Makes 4 Games 100% Free Through September 21

GameRant • September 17, 2026 • technology

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Steam's Free Weekend promotion runs until September 21 at 10 am PT/1 pm ET, offering PC gamers free access to select co-op and multiplayer games, including Diablo 4, Sea of Thieves, Last Flag, and Jump Space.
Diablo 4, an open-world action RPG by Blizzard Entertainment, is available for free play during the weekend with a 75% discount on purchase until September 24, although the campaign cannot be completed within the promotion period.
Sea of Thieves, a pirate-themed action-adventure sandbox by Rare, also features a 65% discount until September 27 and offers extensive multiplayer exploration and combat in a shared world.
Last Flag, a PvP hero shooter focused on an enhanced Capture the Flag mode, is free to play during the weekend but does not have a discount, remaining priced at $4.99.
Jump Space is a four-player co-op PvE game where players manage spaceship operations and exploration, emphasizing teamwork and adaptability under pressure, available for free during the promotion.

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