Subnautica: below zero is the sequel to the beloved survival game Subnautica, return to the watery planet 4546B but this time in an expedition to the planet’s sub-zero arctic region, survive using only your wits and some survival equipment, and uncover the mystery of the missing expedition.  

• Subnautica below zero has a smaller scope than the first game but introduces a new storyline and scripted sequences making it a more linear experience but combined with the free form discovery the first game is known for. Discover what happened to your sister, the Alterra expedition team, and solve the mystery of the aliens that came before.
• Discover new uncharted biomes: the arching expanses of the twisty bridges, the glittering mammoth crystals in the Crystal Caverns, explore above the water on the snow-covered peaks and icy caves in the glacial basin, and many more new environments for you to discover.
• With the arctic environment comes new challenges keep warm above ground by making a cold suit, and warm up next to thermal lilies inside your habitat, minimize exposure when traveling by utilizing vehicles.
• Subnautica: below zero’s dev team is always looking for ways to improve the game get weekly or daily updates about what the team is working on.

Reviews

Subnautica: Below Zero presents an exciting adventure as you explore the unknown. Whether you’re trekking through the snow or diving down unfathomable depths, there’s a feeling of dread as you try to survive, and a sense of wonderment as you discover something new.

Pcinvasion.com  

Below Zero is a mostly brilliant sequel to the best survival game of all time.

Pcgamer.com