Steam

I Thalassa

Also known as 1t, I Thalassa, i thalassa

You are not the goddess, you are her dumbest duck. Explore a biomechanical alien ocean, pilot real submarines, and recover the scattered pieces of a dead creator to help Thalassa, your grieving machine-goddess, bring her father back.

Last update

7 Aug 2026

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Latest update

Patch notesPublished 6d ago

29 devlogs, 15 months: the road so far

April 2025: a ship, an inventory, and some fish Devlog #1 went up on 23 April 2025. In it I said I had been building I Thalassa solo for a few months, inspired by No Man's Sky. What actually existed was a ship that move…

7 changesGameplayBalanceRead patch notes

Update history

Browse past updates and patch notes for this game.

2 updates

August 2026
After 29 devlogs, you can finally play it Hi everyone, Manuel Hosseini here. I have been building I Thalassa in the open for over two years, one devlog at a time. Today it stops being something you watch and becomes som…3 changesUI/audioBalance7d ago

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29 devlogs, 15 months: the road so far

August 2026