Subnautica 2 Beginner Guide: How to Get Started in 2026
Key Takeaways
- Start in the Shallow Reef biome — it's safest and richest in early resources. Don't venture into the Kelp Forest without a knife.
- Build a Scanner first, then a Survival Knife, then Fins. These three tools unlock the entire early game.
- Your first base only needs four things: a Multipurpose Room, a Fabricator, a Locker, and a Solar Panel.
- The Seaglide is the single biggest quality-of-life upgrade. Rush it.
First 30 Minutes: What to Build and When
| Priority | Item | Materials | Why |
| ---------- | ------ | ----------- | ----- |
| 1 | Scanner | 1 Titanium, 1 Battery | Reveals blueprints, your most important tool |
| 2 | Survival Knife | 1 Titanium, 1 Silicone Rubber | Defense + sample collection |
| 3 | Fins | 2 Silicone Rubber | Doubles swim speed |
| 4 | O2 Tank | 2 Titanium, 1 Glass | +30 seconds underwater |
| 5 | Seaglide | 1 Battery, 1 Copper Wire, 1 Lubricant, 1 Titanium | Triples travel speed |
The Seaglide changes everything. It has a built-in sonar map and triples your movement speed. You can escape predators, explore deeper, and cover the map in minutes instead of hours.
Best Starting Biome: Shallow Reef
Stay here for the first 2 hours. Resources are dense, predators are rare, and depth is manageable (0-50m). The only threat is the occasional Stalker near the edges.
Resources to stockpile: Titanium (from metal salvage), Copper (from limestone outcrops), Quartz (white crystals on seafloor), Creepvine samples (for silicone rubber and lubricant).
First Base: Minimal Setup
You don't need a megabase. Build this on day 2-3:
1. Multipurpose Room (2 Titanium)
2. Hatch (1 Titanium, 1 Quartz)
3. Fabricator inside (1 Titanium, 1 Gold, 1 Table Coral)
4. Wall Locker x2 (2 Titanium each)
5. Solar Panel on top (2 Quartz, 1 Titanium, 1 Copper)
That's it. Power from the sun, storage for resources, crafting station. Expand when you have blueprints.
Critical Early Blueprints
Seamoth (small sub): Mobile oxygen supply, doubles exploration range. Needs Mobile Vehicle Bay (1 Titanium Ingot, 1 Lubricant, 1 Power Cell). Repair Tool: Fix the radio in your lifepod → story progression. Needs 1 Silicone Rubber, 1 Cave Sulfur, 1 Titanium. Beacon: Mark locations. Deploy at cave entrances, resource deposits, and your base. Costs 1 Titanium, 1 Copper.What Will Kill You
Drowning (#1 killer): Always surface at 30 seconds oxygen remaining. The O2 warning at 10 seconds is too late if you're deep. Stalkers (#2 killer): Found in Kelp Forest. Hold a Peepers fish in hand — they'll take the fish instead of biting you. Crashfish (#3 killer): Explosive fish in caves. Hear the screech? Swim away immediately. They suicide-bomb you.Common Beginner Mistakes
1. Swimming too deep without O2 upgrades — 100m is the safe limit without upgraded tank
2. Ignoring the radio — it triggers story events that unlock new blueprints
3. Not building a base at all — lifepod storage is tiny and you need lockers
4. Eating raw fish — causes food poisoning, cook everything in the Fabricator
5. Wandering into the Void — the map has edges, and what lives there will one-shot you