Revision 17

Planet Zezura is the desert colony world that the colony ship CICADA had set out to reach when it carried roughly 40,000 cryosleep pioneers from Alterra space. Zezura is the intended destination of that 14-year journey, not the body that Subnautica 2 actually plays out on. The CICADA's ship AI (Noetic Advisor) redirected the ship mid-jump after receiving a signal, and the vessel broke apart in the atmosphere of an unnamed ocean moon orbiting a nearby gas giant. The survivors' lifepod lands on that moon. As of Early Access launch, official launch materials and the Steam store page leave the moon unnamed, treating it as "an all-new alien world." Zezura itself is never reached in the playable build.

Intended Destination

The colony ship CICADA was launched toward Zezura as part of an Alterra Corporation pioneer initiative. Roughly 40,000 colonists entered cryosleep for the planned 14-year transit. Zezura was advertised as the new home for those settlers, with promotional materials describing harsh, desert-like surface conditions and a viable atmosphere for human habitation. The mission never reached the planet; the CICADA's ship AI altered course mid-jump and the vessel disintegrated in the atmosphere of a different body.

Within the in-fiction record, Zezura therefore exists as background lore rather than playable content: a destination that drove the entire colony program, but one that no player visits. The actual setting of Subnautica 2 is the ocean moon where the survivors' lifepod lands. Where this article discusses surface conditions, climate, or fauna, those details refer to Zezura as it appears in mission briefings and in Voices From Beyond, not to the moon the player explores.

The Setting Moon

The body that players actually explore is an ocean moon orbiting a gas giant in a binary star system. Official launch materials, the Steam store description, and the Xbox launch announcement all decline to name the moon, treating it as an "all-new alien world." Some community materials cite a name drawn from in-game audio in Episode 5 of Voices From Beyond, but no first-party post or store listing confirms it. This wiki treats the moon as unnamed until an in-game Data Bank entry or developer post fixes the name in print.

The moon is a covered-in-water body with a xenon-heavy atmosphere. Beneath the surface lies a layered ocean of biomes, including coral systems, sparse plains, vent fields, and a deep map-edge void. Native to the moon is the Axum civilization, whose underwater structures and inscriptions can be read once the player acquires the Axum Vision Adaptation.

Surface Conditions

Zezura's surface is largely inhospitable. Promotional materials and trailers show a barren, desert-like landscape above the waterline with rocky terrain and minimal vegetation. The true diversity and life of Zezura exists beneath the waves. Atmospheric conditions on the surface remain dangerous, strengthening the game's focus on underwater exploration and survival.

Biomes

Zezura's ocean moon hosts a mix of launch-confirmed biomes (Kelp Forest, Coral Gardens with the Graveyard Spires sub-biome, Alien Ruins, Sulfur Pyres, Sparse Plains, and the map-edge Void) plus pre-launch placeholder names that have not surfaced under those labels in the live build. See Biomes for the full launch-build biome list and the placeholder reconciliation notes.

The Blight

The Blight is a mysterious bacterium that is spreading across Zezura's ecosystem and disrupting the planet's natural balance. It appears as a corrupting force affecting both flora and fauna. The Blight is a central narrative threat. Understanding and potentially curing it may be a core objective of the game's story. Players encounter Blight-affected zones where creatures behave more aggressively and the environment becomes increasingly hazardous.

Fauna

Zezura is home to an entirely new set of alien creatures; no fauna carries over from prior franchise entries. Confirmed or spotted fauna includes:

The full creature roster has not been revealed.

The Biosampler

The Biosampler is a new tool unique to Subnautica 2. It allows players to collect genetic samples from alien creatures and use those samples to modify their own biology. This "change what it means to be human" mechanic is central to surviving Zezura's increasingly dangerous depths. Genetic modifications may grant abilities like enhanced oxygen capacity, pressure resistance, or bioluminescence. Though specifics are still being revealed during Early Access development.

Vehicles

Subnautica 2 introduces redesigned vehicles for exploring Zezura's depths:

Base building has been completely redesigned with greater flexibility and creativity compared to previous entries. Players can construct customizable underwater bases using modular components.

Multiplayer co-op

For the first time in the series, Subnautica 2 supports online co-op for up to 4 players. Co-op is described as an optional addition. The game is designed primarily as a single-player experience that can be shared with friends. Players explore, build, and survive together on Zezura. The multiplayer implementation was a major factor in the studio's decision to move to Unreal Engine 5.

System Requirements

Subnautica 2 launches in Early Access on May 14, 2026 at 08:00 PDT (15:00 UTC) for $29.99 USD on PC (Steam, Epic Games Store, Microsoft Store), Xbox Series X|S, and ROG Xbox Ally, with day-one Xbox Game Pass Ultimate and PC Game Pass availability. PlayStation 5 availability has not been confirmed.