Play Windows Steam & Epic games on macOS.
One QR login, real Steam achievements, nothing to install by hand.
Mist is a native macOS launcher that downloads and runs Windows Steam and Epic games through Wine — without ever running the Steam client. You sign in once, and it handles your library, downloads, and achievements directly.
- One login. A single Steam QR scan (or username/password) covers your whole library, game downloads, achievements, and Cloud saves. There's no second sign-in, ever.
- Real achievements. Browse them in-app with global rarity, and unlock them in-game — synced to your actual Steam profile. Mist only ever syncs achievements you genuinely earn; it never fabricates them.
- Steam Cloud saves. View your Cloud quota and restore any synced save straight into the right spot in your Wine prefix, one click — Mist speaks Steam's real Cloud protocol, verified against a real Steam client's own traffic.
- No Steam client, no fuss. Mist talks to Steam's APIs directly and downloads with DepotDownloader — so there's no flaky Chromium-based Steam UI under Wine, no black screens, and no Accessibility permissions to grant.
- Self-contained. Helper tools ship inside the app; the Wine engine (~200 MB) downloads itself on first launch. Nothing to install with Homebrew.
- DirectX via Metal. Runs games through the CrossOver Wine engine, using Apple's Game Porting Toolkit (D3DMetal) when available and DXVK/MoltenVK as a fallback.
Tested on macOS 15 · Apple Silicon (M2), via Rosetta 2.
Homebrew (recommended — always tracks the latest release):
brew install --cask 98przem/tap/mistOr download Mist.dmg from the latest release, open it, and drag Mist.app to Applications.
Mist isn't notarized, so on first launch macOS will block it — right-click the app → Open to get past Gatekeeper. That's the only manual step.
Mist keeps itself up to date — it checks for new releases on launch and can install them from Settings → Updates. To remove it and every trace of its data (Wine prefix, downloaded games, engine, logins):
brew uninstall --zap mist- Open Mist. On first launch it downloads the Wine engine — click Download & Install.
- Go to Settings → Steam and scan the QR with the Steam Mobile app. (This is your only login.)
- Click Install on any owned game, then Launch. Click a game's card for its details and achievements.
Epic games work via legendary — see the Epic tab. For DirectX 12 titles, also install the Game Porting Toolkit: brew install --cask gcenx/wine/game-porting-toolkit.
Mist reads and writes your real Steam achievements over Steam's client protocol using your one login — no Steam client, no Web API key. When you launch a Steam game, it runs through an open-source Steamworks shim (gbe_fork) that lets the game unlock achievements as you play; on exit, anything you earned syncs to your profile.
Experimental. The in-game overlay (Shift+Tab) doesn't work under Wine yet — a known gap.
Each game's detail page shows its Steam Cloud quota and how old your local save is versus what's synced — a one-click Restore from Cloud downloads every cloud file to its real location in the Wine prefix (resolving Steamworks path placeholders like %WinAppDataRoaming% automatically), verified byte-for-byte against Steam's own records.
Read-only for now. Uploading changed saves back to the Cloud isn't supported — Mist's write requests are protocol-correct (verified against a real Steam client's own captured traffic) but Steam's backend issues signed upload URLs that never validate for a non-official client, for reasons that trace below the protocol layer. Restoring works; syncing new progress up doesn't, yet.
Most indie games and single-player AAA titles work well. D3D9–11 runs out of the box on a bundled Metal-tuned DXVK — no extra installs. D3D12 titles run best through Apple's Game Porting Toolkit or an installed CrossOver (Mist detects either and routes D3D games through its D3DMetal automatically); many D3D12 games with a D3D11 fallback also just work without it.
Online/multiplayer with anti-cheat (EAC, BattlEye, Vanguard) is not supported — Mist doesn't circumvent anti-cheat, though many such games offer an offline mode. Check ProtonDB: if a game runs on Proton, it'll likely run here.
Requires the Xcode command-line tools and the .NET 10 SDK (for the bundled helper tools).
make app # build Mist.app (Swift + helper tools)
make dmg # build a drag-to-install dist/Mist.dmg
make release # dist/Mist.dmg + dist/Mist.zipPushing a v* tag builds and publishes a DMG automatically (.github/workflows/release.yml). No binaries are committed — everything builds from source (see tools/).
Built on Wine · CrossOver / Sikarugir engine · Apple Game Porting Toolkit · DepotDownloader & SteamKit2 · gbe_fork · legendary · MoltenVK / DXVK.
Mist is free and always will be. If it's useful to you, you can support development on Ko-fi.
Steam and Epic Games are trademarks of their respective owners; this project is not affiliated with or endorsed by either. Running their clients under Wine or downloading their content with third-party tools may not comply with their subscriber agreements — use at your own risk, with games you own.
MIT — see LICENSE. Wine is LGPL v2.1.