Before exploring third-party tools, ensure you have claimed the official content provided by the developers. These are available to everyone on all platforms:

Third-Party API Wrappers: Tools like CreamAPI or CreamInstaller are commonly used for Steam and Epic Games Store versions. These tools trick the game into believing the DLC is already owned.

The Mod Browser (Built-in)

SnowRunner has an official, free modding system.

Malware Risks: Many "free DLC" download links found on YouTube or forums are high-risk sources for viruses or spyware.

acidicoala/ScreamAPI: Legit DLC Unlocker for Epic ... - GitHub

The Annual/Yearly Passes

Focus Entertainment frequently bundles seasons. Do not buy DLCs one by one.