Where to start in Subnautica 2
Your first goal is simple: do not drown, and do not wander into deep water before you are ready. Subnautica 2 keeps the survival loop the series is known for. You scan resources and creatures, craft better tools at the fabricator, and slowly push into deeper, darker, more dangerous biomes.
This guide covers the early game in Early Access. Unknown Worlds is still adding content, so exact items and biomes can change between patches.
Manage your oxygen
Oxygen is your real health bar in the early game.
- Watch the air gauge and turn back at the halfway point, not when it is empty.
- Surface to refill, or duck into an air pocket inside wrecks and caves.
- Upgrade to higher-capacity tanks as soon as you can craft them.
- Never chase one more resource node on a low tank. That is how most early deaths happen.
Scan everything
Your scanner is the most important tool you have.
- Scan fragments of wrecked tech to unlock blueprints for tools, vehicles, and base parts.
- Scan creatures to learn which ones are harmless and which will bite.
- Scan flora for crafting and food sources.
If you are stuck on progression, the answer is almost always "go scan more fragments."
Gather the core early resources
Stick to shallow biomes and stock up on the basics:
- Metal salvage and ore for tools and base hulls.
- Edible fish and water sources so hunger and thirst never surprise you.
- Building materials for your first small shelter.
Keep a tidy inventory. Drop duplicates of junk and prioritize anything that unlocks a new blueprint.
Build your first base
A small base early is a huge quality-of-life jump. It gives you a safe oxygen refill, storage, and a place to craft.
- Find a flat, shallow spot near good resources.
- Place a foundation and a basic room.
- Add a fabricator, storage lockers, and a power source.
- Expand outward only as far as your power and hull strength allow.
Base your home near the biomes you are exploring so trips stay short and your oxygen lasts.
Play it safe with co-op
Subnautica 2 supports up to four-player cross-platform co-op. If you are playing with friends:
- Split roles. One scouts, one gathers, one builds.
- Share a base so everyone has a safe refill point.
- Stick together when pushing into a new, unscanned biome.
Early mistakes to avoid
- Diving deep before you have oxygen and light upgrades.
- Ignoring fragments because you are "busy." Blueprints are progression.
- Hoarding junk until your inventory is full.
- Forgetting food and water on long trips.
Once you have a base and a vehicle, the map opens up fast. For our full verdict on the Early Access build, read the Subnautica 2 Early Access review.
