Playable on Mac via CrossOver
CodeWeavers rates it “Runs Well” or better (or 4+ stars), or AppleGamingWiki says playable — with no bad signal from the other source and no anti-cheat problem.
How CrosTem works
The full detail — for the curious and the skeptical. The short version: three public databases, one conservative traffic light, and everything stays on your machine.
How the verdict works
A deliberately conservative traffic light, computed from three community sources. When they disagree, CrosTem says so and shows each source's raw status so you can judge for yourself.
Playable with caveats
Mixed or intermediate signals, or anti-cheat support that is merely planned.
Likely unplayable on Mac
A Denied or Broken anti-cheat status always forces red — as do purely negative compatibility reports.
No compatibility data
Neither CodeWeavers nor AppleGamingWiki knows the game yet.
The three sources
CodeWeavers CrossOver database
Official CrossOver compatibility ratings, stars, last-tested version and per-version breakdowns.
AppleGamingWiki
Community status for CrossOver, Parallels, Rosetta 2 and native macOS builds.
Are We Anti-Cheat Yet?
Anti-cheat support status — the number-one blocker for multiplayer games under CrossOver.
Steam's own appdetails API supplies the native-macOS flag and game metadata, so native games are flagged with no external lookups at all.
One engine, two apps
The Mac app and the extension share the exact same verdict engine and caching code — the app vendors the extension's engine verbatim. A verdict is identical wherever you read it.
How the Mac app attaches to Steam
A background helper relaunches Steam with its built-in debugging port and attaches to the client's embedded browser, injecting the same engine the extension uses. Lookups and caching work exactly as in the extension.
While that debugging port is open, any local process could drive Steam for that session. It is localhost-only, lasts one session, and CrosTem never enables it without you asking — the code is public if you want to check.
Caching and rate limits
Results are cached locally (default: 7 days) so browsing stays fast and the sources see as few requests as possible. Fetches retry with backoff, and per-source timeouts keep one slow source from blocking a verdict.
Permissions and privacy
The extension's only browser permission is storage. The Mac app keeps its cache and settings in a single folder in your user Library. Neither has servers or telemetry — the only network requests are the compatibility lookups themselves.
Wrong matches and corrections
When a game matches an ambiguous database entry, the widget shows the candidates and remembers your pick everywhere. Corrections can be undone, exported and imported.