Mac and Steam Deck
Steam's platform flags for this app are Windows yes, Mac no, Linux no. A native Mac version is not what the store is selling.
Mac
The Steam listing marks macOS support as false; that platform flag is not a depot inventory. Playing on a Mac would require an unsupported route such as a compatibility layer or virtual machine. I have no sourced result for Whisky, CrossOver, or Parallels, so those names stay as unverified ideas and not as instructions. The system requirements page is Windows-only because that is what Steam published.
Steam Deck and Linux
Deck uses the Windows build through Proton, which is why a Playable badge can exist while the Linux platform flag stays off. Platinum on ProtonDB means the people who filed those nine reports got it running. It does not mean every Deck will, and it does not overturn the store badge.
A search for free open-world crime games on Mac will not land on a Mac build of this title. The honest answer to that search, for this game, is no.
Questions
What does the Deck badge say?
The store page badge read Playable when it was checked on 30 Oct 2026. IsCrossplay has called the same game Verified. I keep the store's word.
What about Proton?
ProtonDB's summary is platinum, nine reports, moderate confidence, trending gold. Nine reports is a small pile.