HomeWalkthroughChapter 4

Chapter 4: The Truth

The final chapter of EA 1.0. Descend into the Deep Spires and uncover the mystery of planet 4546B.

⚠️ Heavy Spoilers Ahead

This chapter contains the endgame content of Subnautica 2 EA 1.0. Only read if you've completed Chapters 1-3.

1

Prepare for the Deep

The signal from Research Base Omega leads to the Deep Spires, a biome reaching depths of over 350 meters. Before descending, ensure you have: Tadpole with Depth Module MK2, Ultra High Capacity Tank, Pressure Gene MK2, and at least 2 backup power cells.

2

Enter the Deep Spires

The Deep Spires entrance is located at the northernmost point of the Purple Vents. Look for a steep drop-off surrounded by massive crystalline formations. The bioluminescent crystals provide natural lighting, but shadows hide dangerous creatures. Proceed carefully.

3

Navigate the Crystal Caves

The Deep Spires are a maze of crystal-lined caverns. Follow the glowing green crystals — they mark the path toward the story objective. Side tunnels lead to rare resources: Ionite Crystals and Deep Diamond.

4

Leviathan Graveyard

At the heart of the Deep Spires lies the Leviathan Graveyard — the remains of enormous ancient creatures. The final signal originates from within. Navigate through the ribcage tunnels to reach the Alien Research Facility.

5

Alien Research Facility

The facility contains the answers to the planet's mysteries. Interact with all terminals to receive the complete story lore. You will also unlock the Wakemaker Personal Propulsion blueprint — the final tool available in EA 1.0.

6

What Comes Next

EA 1.0 ends here with a clear setup for future updates. The facility's data indicates three additional biomes and two more story chapters planned for future EA updates. Current endgame activities include: building the ultimate base, collecting all BioMod genes, scanning all 47+ creatures, and preparing for the next content drop.

📋 Post-Game Checklist

After completing Chapter 4: collect all 16 Digestion Genes, find all 10 Data Terminals, scan every creature type, and build a self-sufficient base with thermal power. Share your base builds on our community page!