The game only exemplifies what the original showed us with even more colossal underwater creatures to marvel at, mysteries to find, and places to explore. While others out there focus on land-based combat, survival, and exploration, Subnautica is one of a few that focuses on the deep unknown – the ocean.Īnd then came along Subnautica: Below Zero back in 2021 as a sequel to the original release. Subnautica is considered one of the best survival games with an open-world environment that takes a different spin on the genre.