And then there is the second keyword:

The uploaders removed essential parts of the game, such as radio stations, cutscenes, language files, or high-resolution textures.

(ETS2) on platforms like may seem like an efficient way to save storage or bandwidth, they carry significant risks to your device and personal data. This draft explores the drawbacks and safer alternatives for enjoying this trucking simulation. The Risks of Highly Compressed Downloads

A "highly compressed" version of ETS2 is a repackaged installer created by third-party groups. Repackers like FitGirl, DODI, and others are known for taking the full game files and using advanced algorithms to compress them into a much smaller download package, often reducing the total file size to 6-12 GB. This is achieved by stripping out redundant data and utilizing "lossless compression"—meaning no gameplay or graphical data is permanently removed.