File: Foundation.v1.9.0.21.0919.zip ... Apr 2026

This specific filename, , appears to be a distribution file for Foundation , a popular survival city-building game developed by Polymorph Games.

You are looking for a specific older version of the game to ensure compatibility with certain mods.

The string "v1.9.0.21.0919" likely refers to the game's version and build date (September 19, 2021). This naming convention is frequently seen on digital distribution platforms or in community-shared archives. What is Foundation?

If you found this file on a third-party site rather than an official storefront (like Steam, GOG, or Epic), be cautious. Unofficial .zip files can contain malware or outdated, unstable versions of the software.

Some complex mods require specific builds of the game engine to function correctly.

It is the compressed archive containing the game's executable and assets for that specific build.

Foundation is a grid-less, sprawling medieval city-building simulation with a focus on organic development, monument construction, and resource management. You can find official details and updates on the Foundation Steam Page or the Polymorph Games Website . Why you might see this file: