Unknown Worlds Entertainment officially announced Subnautica: Below Zero as a follow-up to the original Subnautica game, revealing its setting and new features.
The full version of Subnautica: Below Zero was officially released, concluding early access and providing a complete gaming experience.
Alterra Corporation establishes a research base on planet 4546B's Southern Ice Islands to study the unique alien fauna and flora.
Scientists conduct the initial surveys of 4546B, noting the unusual ecosystems and presence of alien technology remnants.
Research Pod 5 crash-lands on planet 4546B, stranding engineer Robin Ayou player character, triggering survival and exploration events.
Player discovers a hidden alien lifepod with data logs that hint at ancient alien civilizations and secrets beneath the ice.
Player survives encounters with aggressive cold biome predators, adapting to subzero temperatures and dangers.
The player infiltrates and activates Facility 7, unlocking critical data and tools necessary for deep exploration.
Research reveals the Kharaa bacterium mutation affecting local wildlife and its connection to wider outbreaks.
Following successful data recovery, player is rescued by Alterra forces and returns to the main research base for debriefing.
