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ASTRONAUTILUS

Also known as ASTRONAUTILUS, a, astronautilus

Your ship has crash-landed on a stray rogue planet, and you're out of fuel... It's up to you to delve beneath the frozen surface and find a way to get your ship back into space while fighting strange sea creatures and uncovering the mysteries of the world beneath the ice!

Last update
22 May 2026
Players now
0

Latest update

Store

v2025.11.23Patch notes 2025.11.23

Fixed bugs Achievements trigger immediately instead of when game closes Enable Steam screenshots Limit visibility of fish cosmetic and DRONE upgrade Peashooter now affected by DEADEYE and IONIZE Peashooter only affects…

5 changesFixBalanceRead update

Update history

Browse past updates and patch notes for this game.

4 updates

Gallery

In-game media

Achievements

Community progression

Top picks from 35 Steam achievements, sorted by player unlock rates.

  • POLAR DRIFTEnter POLAR90.3%
  • HITLESSGet a hitless reward from a boss58.1%
  • KLEPTOMANIAGet a 500+ pearl chain39.3%
  • POW POWGet 50% POW30.5%
  • EEL TERRITORYReach EEL WALL28.3%
  • HAT PROBLEMSFind PIMBUS'S hat28.1%