vcmi/docs/players/Installation_macOS.md

Installation macOS

Step 1: Download and install VCMI

• The latest release (recommended):
  • manually: https://github.com/vcmi/vcmi/releases/latest
  • via Homebrew: brew install --cask --no-quarantine vcmi/vcmi/vcmi
• Daily builds (might be unstable)
  • Intel (x86_64) builds
  • Apple Silicon (arm64) builds

If the app doesn't open, right-click the app bundle - select Open menu item - press Open button. On macOS 15 Sequoia and later there will be no Open button, instead you'll see the following dialog:

To fix it, go to System Settings - Privacy & Security tab - scroll down and press the Open Anyway button (marked with an arrow on the image below). After that confirm your action and enter your administrator password.

Step 2: Installing Heroes III data files

Step 2.a: Installing data files with GOG offline installer

If you bought HoMM3 on GOG, you can download the files directly from the browser and install them in the launcher. Select the .bin file first, then the .exe file. This may take a few seconds. Please be patient.

gog.com download page:

Step 2.b: Installing by the classic way

1. Find a way to unpack Windows Heroes III or GOG installer. For example, use vcmibuilder script inside app bundle or install the game with CrossOver or Kegworks.
2. Place or symlink Data, Maps and Mp3 directories from Heroes III to:~/Library/Application\ Support/vcmi/