macOS 14+ · APPLE SILICON

Play Windows Steam games on your Mac. Right inside Steam for Mac.

Nucleus quietly unlocks Windows-only Steam games on your Mac and runs them through Steam for Mac — the app you already use. No separate launcher, no command line, no tinkering. Just open Steam, press Play, and play.

Download Nucleus — Free

Free, donation-supported. No account. No launcher to learn.

A Windows-only Steam game running inside Steam for Mac, shown with a green Nucleus 'Supported' badge

Tightly integrated with Steam for Mac. Not a launcher beside it — your library, your store, your Play button, unchanged. Windows-only games just appear and launch like they were always there.

✓ no second launcher ✓ your real Play button ✓ right in your library
HOW IT WORKS

Four steps. No setup wizard.

No config files, nothing to learn. From install to playing takes about as long as reading this sentence.

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WILL MY GAME RUN?

Check any game before you buy.

Search the Nucleus compatibility database — community-tested results, with a realistic estimate for a Mac like yours.

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No matches in the catalog yet — try another title. Compatibility data grows as the community plays.

Live from nucleus-compat-db · anonymous community data · FPS shown for the best-reported Mac

Open up your Steam library.

Nucleus quietly unlocks the Windows games your Mac was missing — no launcher, no setup, no command line. Just press Play.

Download Nucleus — Free

Version 2026.06.15.1 · Free, donation-supported · macOS 14 (Sonoma)+ · Apple Silicon