Dive into the Unknown Depths
of an Alien Ocean World
Explore mysterious underwater ruins, pilot advanced submarines, and survive in a breathtaking sci-fi ocean where every dive reveals new secrets
Join Thousands of Players Ready to Explore
🔥 Be the first to know about updates, beta access, and exclusive content!
Why I Thalassa is Different
🌊 Living Ocean Ecosystem
Experience an ocean that breathes and evolves. Mechanical wildlife roams freely, ancient ruins shift with the currents, and every dive feels truly alive.
🚢 True Submarine Simulation
Pilot advanced submarines with realistic physics and deep customization. Master sonar, manage oxygen, and feel the weight of the ocean above you.
🏗️ Build Your Underwater Empire
Construct sprawling underwater bases, establish research outposts, and create your own haven in the depths. Your base, your rules.
🌍 Procedural Mystery
Every playthrough is unique. Procedurally generated worlds ensure you'll always have new secrets to uncover, new dangers to face, and new wonders to discover.
Explore the Depths
From advanced submarines to mysterious biomechanical creatures, discover the wonders that await in the alien ocean
🌊 Stay Updated on the Journey
Get exclusive updates, behind-the-scenes content, and be the first to know about beta testing opportunities!
📹 Watch the game evolve week by week with exclusive development updates