If you're looking for a survival simulator that doesn't hold your hand, Green Hell by Creepy Jar is exactly that. Dropped into the dense Amazonian jungle with nothing but your bare hands, you must learn to craft, hunt, and heal yourself from tropical diseases and wounds. Official System Requirements

2. How to Legally "Compress" the Game

You cannot make the game files smaller than the developer intends without breaking the game. However, you can reduce the download size by managing Steam settings:

To ensure a secure installation and receive the latest updates, it is recommended to download the game through verified digital storefronts.

We compress everything.

Downloading Green Hell for PC: A Guide