Note: Run the commands displayed like the example below by pasting them into Terminal.app.

Terminal.app:

  example command

• Install XQuartz

• Install Homebrew

• Install Wine

Terminal.app:

  brew update
  brew install wine

• Download Steam

• Run Steam's installer with Wine

Terminal.app:

   wine ~/Downloads/SteamSetup.exe

• Launch Steam with Wine

Terminal.app:

   wine ~/.wine/drive_c/Program\ Files/Steam/Steam.exe -no-dwrite

In Steam:

• Select the LIBRARY tab
• Next to the search field, click GAMES and select the TOOLS option
• Right click on Source SDK Base 2007 and select Install

Download GoldenEye: Source 5.0 (.exe installer)

In Steam:

• Select Settings from the Steam menu in the upper left
• Select In-Game in the panel on the left
• Uncheck Enable the Steam Overlay while in-game
• Quit Steam by selecting Exit from the Steam menu

Run the GoldenEye: Source installer with Wine

wine ~/Downloads/GoldenEye_Source_v5.0_full.exe

Launch Steam with Wine

wine ~/.wine/drive_c/Program\ Files/Steam/Steam.exe -no-dwrite

Run GoldenEye: Source from Steam by selecting it under the LIBRARY tab and clicking Play

Big thanks to lazdzx for this guide

Tested with success on 10.6, 10.9, 10.10 with dozens hours of online and LAN gameplay.

• Quit GoldenEye: Source normally
• Hit Command + Tab if the screen is black
• Force quit GoldenEye: Source

• You must log out and log back in (or restart) for both of these commands to take effect.

• You can disable mouse acceleration with this command:

• defaults write .GlobalPreferences com.apple.mouse.scaling -1

You can re-enable it with this command:

defaults write .GlobalPreferences com.apple.mouse.scaling 1.5

You didn’t read the instructions. You must pass the -no-dwrite option when starting Steam with Wine, as noted above and below.

You didn’t read the instructions. You need to disable the Steam in-game overlay as noted in step 9 above.