Superposer FAQ

Yes. Superposer is a free beta: everything on this page is included. There's no Superposer account to create and nothing to pay.

Join the waitlist below with your name and email. Invites go out as we have room, and each one is a private link to the beta page. If you already have an invite, open it here.

No. Superposer brings its own Windows runtime and graphics layers and installs them on first launch. You need the Mac Steam app, your own Steam games, and Rosetta 2, which Setup helps you add.

Many single-player and co-op Windows games do, especially DirectX 11 and 12 titles, and Superposer tells you before you install whether a game is likely to work. Results vary by game, and this is an early product, so we publish what we've actually tested: games that work and the full compatibility list.

Games with kernel-level anti-cheat (many online shooters) won't work, and Superposer will tell you. We never strip, emulate or bypass DRM or anti-cheat, and games always start through the real Steam client. Some games with anti-cheat can still be played offline.

For some games, Superposer's upscaling and overlay would normally need to load code into the game. Capture mode does it differently: a separate helper app captures the game's window and redisplays it with upscaling and screenshots, and nothing is loaded into the game itself. It relies on macOS screen capture, so macOS asks for your permission.

It doesn't change what anti-cheat allows: a game whose anti-cheat blocks Windows compatibility layers still won't run.

No. You keep using the real Mac Steam app and your own account. Superposer doesn't ship Steam or Valve's Steam client files; your own Steam installs those. It includes a small Steam bridge built from Valve's public Proton source, and Apple's D3DMetal, each under its owner's licence (Settings › Licences).

Yes. Superposer finds what other tools left on your Mac and can bring your Steam games, their settings and saves over without a re-download, and the other tool keeps working. This is a preview feature. See Help › Coming from another tool.

Your games, saves and library stay on your Mac, and there is no telemetry by default. Problem reports stay on your Mac until you choose to send one, and you see what's in it first. This website has no trackers or cookies; the beta waitlist stores only the name and email you type and a one-way hash of your network address, to keep bots out. See Help › Your privacy and the privacy policy (draft).

Yes. Every change Superposer makes is recorded, and uninstalling undoes them. See Help › Uninstalling Superposer.