While Cities: Skylines (the original) has a base install size of approximately 4GB to 10GB, a "highly compressed" version of 500MB is likely an unofficial, "repacked," or "ripped" version often found on third-party sites. These versions frequently remove essential assets like high-resolution textures, music, or radio stations to meet such extreme size constraints.

Features of the Highly Compressed 500MB Version

Option B: Old Versions (Version 1.0 – No Updates)

If you can find a retail CD-ROM or a very old Steam backup from 2015, the original launch version of Cities: Skylines without any patches or DLC was roughly 1.2 GB. You can further compress this using tools like CompactGUI (Windows 10/11 built-in compression) to bring it down to 800MB. Still not 500MB, but close.

Save your city from ruin: do not trust the 500MB download. Real city planning takes real hard drive space.

Downloading a "highly compressed" 500MB version of Cities: Skylines is almost certainly a security risk or a scam.

The highly compressed 500MB version of Cities: Skylines offers several benefits for urban planning enthusiasts and gamers alike. Some of the key benefits include: