Explore mysterious underwater ruins, pilot advanced submarines, and survive in a breathtaking sci-fi ocean where every dive reveals new secrets
🎮 Wishlist Now for Launch Discount!Experience an ocean that breathes and evolves. Mechanical wildlife roams freely, ancient ruins shift with the currents, and every dive feels truly alive.
Pilot advanced submarines with realistic physics and deep customization. Master sonar, manage oxygen, and feel the weight of the ocean above you.
Construct sprawling underwater bases, establish research outposts, and create your own haven in the depths. Your base, your rules.
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.
From advanced submarines to mysterious biomechanical creatures, discover the wonders that await in the alien ocean
Advanced submarine for deep ocean exploration
Ground vehicle for seafloor exploration
Interact with inhabitants of the deep
Deploy drones to map unknown territories
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Follow the complete development journey of I Thalassa — monthly devlogs with behind-the-scenes progress, new features, and exclusive previews.
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