One of the original and classic RTS games of the 90s is available on GOG for free for the next 42 hours. The Commander's pack contains the base game, both expansion packs, digital manual, map editor and soundtrack. Compatibility notice on GOG: - Works on modern Windows (7,8/8.1,10) - ATI/AMD compatibility notice: Total Annihilation: Commander Pack requires graphic card drivers version 13.4 or older. - Mac notice: The game is 32-bit only and will not work on macOS 10.15 and up.