If you want to keep the game permanently, it is frequently on sale during these promotional windows:

: Visit the Epic Games Store , log in, and check the "Free Games" section or search for Subnautica to claim temporary access.

: A major free-play period occurred from April 2 to April 6, 2026 . If you missed this, watch the Unknown Worlds News page for the next announcement, as these events often coincide with news about the upcoming Subnautica 2 . 🛠️ How to Get Subnautica Legally

Searching for "free download" links on unofficial websites often leads to malware or pirated copies that may not include the specific update or essential bug fixes. Using official platforms like Steam or the Epic Games Store ensures a safe and stable installation. Can We COMPLETE Subnautica While it's FREE To Play?!?

: Ensure you have an active Game Pass subscription to access "Free Play Days" events.

: Once claimed or added to your library during the free window, the game will appear in your Library or Download section for installation.

: From April 9 to April 12, 2026 , players with Xbox Game Pass Ultimate , Premium , or Essential subscriptions can play Subnautica for free.