Home / Steam
Gaming
Steam · legacy macOS compatibility
Valve's PC game store, library and desktop client.
Only sourced records are listed. An unlisted OS does not automatically mean the app cannot run; it means this database does not yet have reliable evidence for it.
| macOS | Final version / lifecycle | Status | Notes | Source |
|---|---|---|---|---|
| macOS Big Sur 11 | Support ended 2025-10-15 | ● End of support | Steam stopped supporting macOS 11 Big Sur on October 15, 2025; the client no longer runs on that OS after the cutoff. | Steam macOS 11 support notice |
| macOS Catalina 10.15 | Support ended 2025-02-15 | ● End of support | Steam stopped supporting macOS 10.15 Catalina on February 15, 2025; the client no longer runs on that OS after the cutoff. | Steam macOS 10.15 support notice |