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Open the respective launcher (GOG Galaxy or Steam) and click Install .

If the game crashes or won't start after installation, try these steps:

Right-click the game shortcut, go to Properties > Compatibility , and check "Run this program as an administrator."

If the game doesn't support your widescreen monitor, check the PCGamingWiki Caesar IV page for community patches or configuration file tweaks to enable 1920x1080 or 4K resolutions. 5. Essential Tips for New Players

Remember that buildings now have "spheres of influence." Place your markets and water supply carefully to cover the most housing.

Since the game is "abandonware" in spirit but still actively sold, I recommend these official platforms to ensure you get a safe, virus-free installer:

Before downloading, ensure your PC meets these (very modest) requirements: Windows XP / Vista / 7 / 10 / 11 Processor: 1.6 GHz or faster Memory: 512 MB RAM (Modern PCs usually have 8GB+) Graphics: 128 MB VRAM (DirectX 9.0c compatible) 3. Installation Guide Purchase: Complete your purchase on GOG.com or Steam.

During installation, if prompted to install DirectX 9.0c , click "Yes." Modern versions of Windows often need these legacy files to run older 3D games correctly. 4. Common Troubleshooting for Windows 10/11