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Steam Client to Require macOS 12+ Starting October 15
Steam will stop supporting macOS 11 Big Sur on October 15, 2025, according to Valve, requiring Mac users to upgrade to macOS Monterey or later to...
Apple also discontinued security updates for Big Sur in 2023, and that's left legacy systems vulnerable to malware that could compromise Steam accounts and game performance. Valve released the first native beta shortly after WWDC in June, signalling its dedication to continue to support Mac gaming. Apple says that Adaptive Power Mode can make "small performance adjustments" when necessary to extend an iPhone's battery life, including slightly lowering the display brightness or allowing some activities to "take a little longer."
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