Superposer

Help

Superposer Help

Everything in Superposer's built-in help, also on the web. In the app: Help › Superposer Help (⌘?).

    Start here

    • What Superposer isSuperposer lets you play the Windows games you own on Steam on a Mac with Apple silicon, from the normal Mac Steam app.
    • How Superposer worksWhat happens between pressing Play in Steam and the first frame, and which part does what.
    • The setup assistantFirst launch gets Superposer ready by itself; Setup shows anything your Mac still needs, one card per step.
    • Steam integration, explainedHow Steam is set up to offer and run Windows games, what is changed in it, and why Steam updates stay on.
    • Will it work? Compatibility and TestEvery game shows a Will it work status: Works, Maybe, Doesn't work or Untested.
    • Using a controllerConnect your controller to the Mac as usual (Bluetooth or USB) before or during the game.
    • Save backupsA copy of each Windows game's saves after every session and before anything risky; restore any version from the game's page.
    • Troubleshooting indexFind your problem by what you see, and jump to the fix.

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    Getting started

    Set Superposer up once, then play your Windows games from Steam like any other game. Nothing here asks you to use Terminal.

    Playing games

    Install and play from Steam as usual; Superposer's library, game pages and Compatibility page help you pick games and tune them.

    • Playing from SteamInstall and press Play in Steam, or press Play in Superposer; the first launch takes a little longer.
    • When Steam asks you somethingSome games make Steam ask a question before they start: a licence agreement (EULA) to accept, which launch option to use, a notice, a Steam Cloud conflict, a CD key and so on.
    • Stopping a gameSteam's Stop button works: confirm "Exit game?" and the game and everything it started end within a few seconds, even while the game is still loading.
    • The menu bar extraAn optional Superposer icon in the menu bar with the running game's quick controls, Steam integration and recent games.
    • Steam launch optionsMac Steam runs launch options without a shell, so the Linux habit VAR=1 %command% (common in ProtonDB tips) stops the game from starting ("OS Error 260").
    • Per-game settingsEach game's Settings tab: translation layer, resolution and upscaler, frame rate, presets and more.
    • Will it work? Compatibility and TestEvery game shows a Will it work status: Works, Maybe, Doesn't work or Untested.
    • Sharing your resultsWhen your copy of Superposer has a results server, How did it run for you?
    • Games from other stores (beta)Other Stores in the sidebar lists Windows games from GOG, Epic and itch.io, and games you add yourself.
    • Special setupsTwo people on one Mac, a shared or external Steam library, Steam Families and Steam's offline mode.

    In game

    Superposer's tools inside a running game: the overlay, controllers, the Performance HUD, performance presets and frame generation.

    • The in-game overlay and shortcutsThe quick panel (Shift+F10), the full overlay (the Xbox button or Right Shift+Tab), Steam's overlay and every in-game shortcut.
    • Using a controllerConnect your controller to the Mac as usual (Bluetooth or USB) before or during the game.
    • The Performance HUDThe HUD shows how the game is running, in a corner of the screen.
    • Performance presetsQuality, Balanced, Battery or Custom: resolution, upscaler and frame rate set for your Mac in one choice.
    • Frame generationFrame generation draws an extra frame between every two real ones, so motion looks smoother: a game running at 30 frames per second shows 60.
    • Low latency and adaptive syncLow latency keeps fewer frames waiting for the display; adaptive sync shows frames as soon as they're ready.

    Storage and uninstalling

    How Superposer keeps its disk use small, and how to remove a game or Superposer itself cleanly.

    • Storage: how Superposer saves spaceSuperposer shares, compresses and tidies its files by itself; Settings › Storage shows what it saved you.
    • Save backupsA copy of each Windows game's saves after every session and before anything risky; restore any version from the game's page.
    • Uninstalling a gameRemove a game and everything Superposer made for it, keeping your saves if you like.
    • Uninstalling SuperposerUndo every change Superposer made, remove its files and leave Steam as it was.
    • If you deleted the appDragged Superposer.app to the Trash without uninstalling? Steam keeps working; here's what happens and what's kept.

    Troubleshooting

    When something doesn't work: where to look first, how to send a report, and the known problems with their fixes.