Announcement
Small patch
The scene before the third cave is slightly rearranged to be less confusing.
Read announcementSteam
Sea under the sea under the sea
Also known as Sea under the sea under the sea, sea under sea under sea, sea-under-the-sea-under-the-sea
An underwater survival horror game where the Earth is covered in water
Last update
20 May 2026
Players now
0
Latest update
Update history
Browse past updates and patch notes for this game.
3 updates
February 2024
- Sea broadcast
- Sea broadcast
Gallery
In-game media
Achievements
Community progression
Top picks from 10 Steam achievements, sorted by player unlock rates.
- The startThe start97.0%
- GradpaGradpa54.7%
- Tunnel 1Tunnel 132.1%
- CityCity29.1%
- Tunnel 2Tunnel 228.5%
- Vertical watersVertical waters27.9%