***IMPORTANT NOTE: Completely install the main game and the three expansions before playing and/or registering any of them. The expansions contain key files that will alter the original game and complete its installation. Once all the games and expansions are installed, then you can launch the games and enter the registration keys, as needed.
Once everything is downloaded, CIV IV and COLONIZATION will be already installed (COLONIZATION will not yet be licensed and registered, though).
Start off by clicking LAUNCH INSTALLER for WARLORDS. An installer app will start up (and maybe re-launch immediately in 32-bit mode, depending on your version of OS X). Once the installer is running, click through it. If it asks you where to find the software to update, point it at the original CIV IV app in /Applications/MacGameStore/Games/Civilization_IV_1/Civilization IV/ folder.
Once the WARLORDS installer is done, the action button will still say "launch installer," but what you need to do next is to double-click the game's icon on the left (Genghis' face). A drop-down will descend saying "Additional Installation Needed." Click the "Find" button. This will allow you to point at the app that the Mac Game Store app will launch when you want to play WARLORDS. The WARLORDS app is in the /Applications/MacGameStore/Games/Civilization_IV_1/Civilization IV/Warlords/ folder.
WARLORDS is now installed (but not yet licensed and registered).
Next, click LAUNCH INSTALLER for BEYOND THE SWORD. An installer app will start up (and maybe re-launch immediately in 32-bit mode, depending on your version of OS X). Once the installer is running, click through it. If it asks you where to find the software to update, point it at the original CIV IV app in /Applications/MacGameStore/Games/Civilization_IV_1/Civilization IV/ folder.
(If the BEYOND THE SWORD installer asks you to choose a drive to install on, but the main drive where the games and OS are is grayed out and not selectable, it's because you've not completed a prior installer. You still need to do the "Find" part of the prior installation process.)
Once the BEYOND THE SWORD installer is done, the action button will still say "launch installer," but what you need to do next is to double-click the game's icon on the left. A drop-down will descend saying "Additional Installation Needed." Click the "Find" button. This will allow you to point at the app that the Mac Game Store app will launch when you want to play BEYOND THE SWORD. The BEYOND THE SWORD app is in the /Applications/MacGameStore/Games/Civilization_IV_1/Civilization IV/Beyond the Sword/ folder.
BEYOND THE SWORD is now installed (but not yet licensed and registered).
To apply licensing and registration:
Click "Play" next to COLONIZATION. A drop-down will descend with the game's registration key. Click "copy." A Window will appear as the game launches for you to paste the registration key into. Skip Registration and click through the title cards until you get to the main menu, then exit the game.
Click "Play" next to WARLORDS. A drop-down will descend with the game's registration key. Click "copy." A Window will appear as the game launches for you to paste the registration key into. Skip Registration and click through the title cards until you get to the main menu, then exit the game.
Click "Play" next to BEYOND THE SWORD. A drop-down will descend with the game's registration key. Click "copy." A Window will appear as the game launches for you to paste the registration key into. Skip Registration and click through the title cards until you get to the main menu, then exit the game.
All four CIV IV games should now be playable from your game library in the Mac Game Store client app.