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 allows you to collect new traits and abilities from different alien creatures in order to upgrade your own abilities. By modifying your own biomod, you can efficiently survive and adapt to the environment of the new planet. While you start with simple upgrades like improved food digestion, you will unlock much more powerful abilities as you explore deeper into the world.
New Disease
Bloom Disease

Subnautica 2 introduces a new disease called the Bloom Disease. It spreads across the planet, affecting both local animals and plant life. Infected creatures become aggressive and will attack on sight. One of the story's primary goals is to find a cure for this mysterious illness.
New Vehicles
The Tadpole

The Tadpole is a new vehicle that can be customized based on the player's needs.
New Creatures
Leviathans

There will be five Leviathans available during Early Access, with more creatures to be added throughout the game's development.
New Base Building
New Base Buildings and Tools

New mechanics and craftable materials will be available, including new base-building features that allow you to redesign the entire structure, from reshaping walls to changing windows.
New Multiplayer Mode
Play with Friends via Co-Op Mode

Subnautica 2 will feature a multiplayer co-op mode, allowing players to explore the world together with their friends.
Multiplayer Guide: How to Host and Join Friends