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Tethyscope

Also known as Tethyscope, steam:4654140, t

Explore our planet's ocean to discover animals, plants, and shipwrecks. Take photographs to document your findings and sell them to fund upgrades to your submarine.

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Last update
22 Jun 2026
Players now
0
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Latest update
Announcement

v0.9.4v.0.9.4 Predators and Prey, icebergs, sunken treasure

New Creatures: 5+ new creatures to discover, spread across ecosystems and depths Environmental Features: Icebergs Predator / Prey Interactions: blue whales, killer whales, and sharks now munch their prey Achievements Ad…

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Latest updates

Update history

Browse past updates and patch notes for this game.

2updates

Gallery

In-game media

Achievements

Community progression

Top picks from 10 Steam achievements, sorted by player unlock rates.

  • A Fixer upperUpgrade one submarine component100.0%
  • Big BoyObserve a giant morph38.4%
  • From Beyond the PaleObserve an albino morph30.7%
  • Moby!Observe a giant albino morph23.0%
  • PerfectionUpgrade all components to max level15.3%
  • Top drawer!Upgrade one component to max level15.3%