[size=medium]Dive in and download Subnautica! which is now free for a limited time over at Epic Games Store til December 27th, 2018.
https://www.epicgames.com/store/en-US/product/subnautica/home[/size]
https://www.epicgames.com/store/en-US/product/subnautica/home[/size]
Subnautica is an open world survival adventure game developed and published by Unknown Worlds Entertainment. It allows the player to freely explore the ocean on an alien planet, known as planet 4546B, collecting unique resources to survive - Wikipedia