This guide covers all the new game features in Subnautica 2, including the new world, vehicles, creatures, biomes, and the multiplayer mode.
Table of Contents
New System
BioMod System
A new system that lets you collect traits and abilities from alien creatures to upgrade your own. You start with simple upgrades like improved food digestion, with stronger abilities unlocking the deeper you explore.
How Biomods Work
Biomods come in two types: Active and Passive. Active Biomods are triggered manually, such as Dash for bursting away from predators. Passive Biomods work automatically as long as they’re equipped, providing benefits like improved oxygen efficiency, food conservation, and camouflage.
| Note! | You can only equip one Active and one Passive Biomod in this current Early Access build. |
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Unlocking the Full Roster
The current build has 15 total Biomods, 5 of them Active and 10 are Passive, but most stay locked until you find the Bioscanner, an upgraded Scanner used to scan creatures and alien technology.
| Related Articles | |
|---|---|
 Best Biomods Guide |  How to Get the Bioscanner |
New Disease
Bloom Disease
Subnautica 2 introduces the Bloom, a type of viral disease that affects the local flora and fauna of the planet. Purifying bloom nodes are one of the story's primary goals.
How the Infection Spreads
The Bloom takes root in Angel Combs, sealing them behind growths called Bloom Cankers that spawn parasites. Smaller connected combs, called Bloom Nodes, usually have to be cleared first.
Angel Comb GuideNew Vehicles
The Tadpole
The Tadpole is a new vehicle that can be customized based on the player's needs.
Swappable Chassis Instead of Separate Vehicles
In this early access build, the only available chassis for the Tadpole are the Scout Ray and the Haul Chassis, but Subnautica 2 may introduce additional vehicles later on. Right now, the Tadpole can be equipped with a swappable chassis.
| Chassis | Role |
|---|---|
| Scout Ray | Fastest chassis available. Trades cargo space for speed. |
| Haul | Slower, but adds cargo pods and extra co-op seating. Best for resource runs. |
| Coming Soon! | A third walker-style chassis called Seafrog has been previewed but isn't available yet. |
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| Related Articles | |
|---|---|
 Tadpole Guide |  Best Tadpole Upgrade Modules |
New Creatures
Leviathans
A new set of Leviathan-class creatures roam the Zezura ocean, with more confirmed for future updates.
Confirmed Leviathans
| Leviathan |
|---|
 Collector Leviathan Aggressive squid-like predator. The most frequently encountered Leviathan. |
 Shiver Leviathan Pack hunter in the void (outside of the boundaries of the current Early Access). Females grow much larger than males. |
 Great Jaw Leviathan Non-moving Leviathan. Guards scannable items and other resources. |
 Deepwing Brooder Docile Leviathan that drops eggs used for a food recipe. |
Like all predators in the game, Leviathans cannot be killed in Subnautica 2 but you can scan them to unlock Biomods and databank entries.
All Leviathan LocationsNew Base Building
New Base Buildings and Tools
New mechanics and craftable materials let you redesign your entire base, from reshaping walls to changing windows.
Expanded Building Options
Subnautica 2 offers a wide range of building options, and just like in previous games, you can farm materials to expand and customize your base. Unlock Recipe Data cards to obtain new blueprints for decorating your base.
| Related Articles | |
|---|---|
 How to Build a Base |  Best Base Locations |
New Multiplayer Mode
Play with Friends via Co-Op Mode
Subnautica 2 features a multiplayer co-op mode, letting players explore the world together with friends.
Up to Four Players, Fully Optional
Co-op supports up to four players, with one player hosting three guests, to share the eerie depths of Subnautica 2.
Crossplay Between PC and Xbox
Crossplay works across Steam, Epic, and Xbox, using an in-game friend code to join. Subnautica 2 has not yet been released on PlayStation or Switch.
Multiplayer Guide: How to Host and Join FriendsRelated Articles
Recommended Guides
 Walkthrough (Early to Late-Game) |  Where to Go and What to Do Next |  Tadpole Pens: How to Open the Locked Door |
 Plant Farming Guide |  Cooking and Recipes Guide | Best Biomods |
| Best Tadpole Upgrades |  Metal Farm Guide |
| Progression & Priorities | ||
|---|---|---|
 Early Game |  Mid-Game |  Endgame |
Lists
 All Leviathans |  All Items List |  Biomes & PoI List |
 Blackbox List |  Recipe Data Cards (Blueprints) |  Vehicle List |
 Buildings & Facilities List | Best Base Locations |  Best Tools to Craft |
Salt
Silver
Copper
Lead
Lucifer Rotsac
Conduit Crystals
Creature Enamel
Enameled Glass
Troilite
Celestine
Multiplayer Guide
How to Eat Food (Digestion)
How to Craft Items
Drinking Water Guide
How to Craft Air Tank?
How to Get Basic Fins
Scanner Station Guide
How to Manage Your Oxygen?
Alien Ruins
How to Use Coordinates
How to Get More Storage
How to Get a Rebreather
Night Survival Guide
How to Heal
Angel Comb Guide
How to Power Your Base
How to Recharge Batteries and Tools
How to Get the Repair Tool
World Tree Guide
Flashlight Guide
Strong Acid Guide
How to Get Heat Tolerance
Scanner Guide
How to Get Tadpole Depth Module Mk. 2
How to Get a Wakemaker
How to Get Fibrous Pulp
How to Get a Wiring Kit
How to Get Advanced Wiring Kit
How to Get the Entangled Power Cell
How to Refund Bases
Specs Requirements
Is There Crossplay?
Supported Devices
Update & Roadmap
How Long to Beat?
Can You Play Subnautica 2 on PS5 and PS4?
Is Subnautica 2 on Xbox?
Is Subnautica 2 on Steam?
Is Subnautica 2 on Switch?
