Since Cities: Skylines II is now out, the original game and its DLCs frequently go on sale for very deep discounts (often 70-80% off) on platforms like Steam or Humble Bundle.

Cities: Skylines relies heavily on the Steam Workshop . Pirated versions cannot access the Workshop directly, making it very difficult to use the thousands of community-made mods and assets that make the game famous.

This usually encompasses major expansions like After Dark , Mass Transit , Industries , Sunset Harbor , and Plaza & Promenades .

Downloading game files from unofficial sources carries a high risk of malware, miners, or trojans being bundled with the installer.