To get the "complete piece" safely and support the developers, you can purchase it at:

: It is designed to run on Windows, macOS, and Linux.

There is no legitimate, legal way to download for free. The game is a paid title currently in Early Access, and version 0.88.0.0 (released in late 2023) is a standard update available through official storefronts.

: Another DRM-free option if you prefer their launcher or store. Why avoid "Free Download" sites?