Steam Scream V is on until Nov 2. Spooky games crowd the store this week, so the quieter weeks after it are worth a look.

See what's launching
Panthalassa header image
Released May 17, 2026 $13.99 Very Positive Counts toward your Steam games

Panthalassa

By Meia Calça

Story RichPuzzlePoint & ClickUnderwaterExplorationVisual NovelTranshumanism3DFunnyPost-apocalypticPsychedelicCollectathon
Followers —
Reviews 103 Very Positive
Players now 0 Peak today 0
Followers, 30 days — Not enough history yet

About Panthalassa

Panthalassa is a game tagged Story Rich, Puzzle and Point & Click by Meia Calça, released May 17, 2026. It has 103 Steam reviews (Very Positive). The Steam games most like it include Defective Detectives, Ultra Strangeness and In The Space - Escape Room.

Panthalassa is a Point and click Puzzle game set in an underwater alien world. You play as an AI reborn in a highly advanced body they do not recognize. Interface with otherworldly technology and unlock the secrets behind this strange planet.
From the Steam page

Steam's store box shows the price and a buy button. It loads from Steam, which may set its own cookies.

Steam data

Everything Steam lists for Panthalassa · record updated 17 hours ago

Steam store

Overview

App ID2955720
Release dateMay 17, 2026
Last change number39795179
Last record update17 hours ago

App info

App type
Game
Developer
Meia Calça
Publisher
Meia Calça
Steam profile
Counts toward game count and achievement totals · checked 1 day ago
Technologies
Unity detected

Platforms

Windows
Steam Deck
Verified
Controller
Full support

Features

5
Single-playerSteam AchievementsFull controller supportSteam CloudFamily Sharing

Prices

Price · US$13.99
On sale0 of 41regions right now
Lowest seen · US$13.99Oct 23, 2026
Checked15 hours agoin 41 regions

India₹INR

Every price change is kept from Oct 23, 2026 on. Pick a region below to compare.

Patches

Patch notes

1
  1. Jul 16, 2026 PANTHALASSA UPDATE 16/07/2026

    This update add the portuguese translation to the game We also fixed the bug where you didnt need to complete the power station puzzle to progress through the maze Corrected some spelling mistakes (doubt thats all of them) Removed Herobrin…

Builds

1
BuildBranchUpdated
24227185publicJul 16, 2026

Depots

Depots

1
IDNameSystemsSizeDownloadManifest
2955721 — All 1.27 GB 617.3 MB 541701839120775970

Branches

1
BranchBuildUpdatedAccess
public 24227185 Jul 16, 2026 Open

Configuration

Install foldersteamapps/common/Panthalassa

Launch options

1
ExecutableArgumentsSystemsDescription
Panthalassa.exe Windows

Cloud saves

Space per player976.6 KB
Filesup to 16
Save locations1
RootPathPatternSystems
WinAppDataLocalLow\MeiaCalca\Panthalassa\*All

Achievements

Achievements1212 hidden
Most unlocked83.9%POWER ON
Rarest13.8%ALL SEA

Global unlock rate

share of players who have it
  • POWER ON Hidden achievement 83.9%
  • JOURNAL ENTRY 01 Hidden achievement 69.1%
  • SCALES OF JUSTICE Hidden achievement 57.9%
  • THE SIBLING'S SECRET Hidden achievement 47.8%
  • MARINE BIOLOGIST Hidden achievement 43.8%
  • MASTER OF MEMORY Hidden achievement 43%
  • DATA HOARD Hidden achievement 42.1%
  • INFINITE PLEROMA Hidden achievement 40.6%
  • THE RETURN Hidden achievement 40.4%
  • ERROR ANOMALY ERROR Hidden achievement 22.5%
  • NEVER ENDING DREAM Hidden achievement 22.2%
  • ALL SEA Hidden achievement 13.8%

News

  1. Jul 16, 2026 · Community Announcements Panthalassa is now available in Portuguese

    Hey!In our latest update, Panthalassa is now playable in our mother tongue of Portuguese!Not only that, but we have also fixed some bugs and english text in this update, we also might have added some…

  2. Jun 17, 2026 · Community Announcements It has been one month since Panthalassa's release (and other mysteries)

    Last month we had the pleasure of releasing PANTHALASSA out to the world and despite the modest launch, we are so overwhelmed by the incredibly positive response the game has been getting (98% Very p…

  3. May 21, 2026 · Community Announcements The Official Soundtrack for Panthalassa is out now!

    Big week for Panthalassa fans (yes all three of you reading this) as we have just released the official soundtrack on Bandcamp and youtube! This soundtrack was created by Tomás Nobre, Ana Greengrass …

  4. May 18, 2026 · Community Announcements Try ou ALL SEA an Introductory Zinelet to PANTHALASSA

    Check out ALL SEA here!The good people at Data Sparrow reached out to us asking if they could make a zine about Panthalassa.If you are currently playing the game or if you're interested in checking i…

  5. May 17, 2026 · Community Announcements PANTHALASSA is out now!

    After many years of development PANTHALASSA is finally out.What started as a simple text adventure game grew into something we could only dream of. Panthalassa was a labour of love done in our off ho…

  6. Mar 12, 2026 · Community Announcements PANTHALASSA in: Curious Odyssey PT2

    Broadcasting Panthalassa in celebration of the Curious Odyssey event for Narrative focused games

  7. Mar 11, 2026 · Community Announcements PANTHALASSA in: Curious Odyssey PT1

    Broadcasting Panthalassa in celebration of the Curious Odyssey event for Narrative focused games

  8. Feb 23, 2026 · Community Announcements PANTHALASSA is joining next fest!

    Ahhhh, hello once againso basically we are joining next fest (but we didnt really update the demo haha)HOWEVER, we did this because we were hard at work on the REAL ACTUAL game, like bear with us we …

  9. Nov 19, 2025 · Community Announcements Panthalassa AdventureX 2025 showcase Day 2

    Panthalassa is one of 30 titles selected to participate in AdventureX this year. Besides the physical event in London we will also be streaming here on Steam

  10. Nov 10, 2025 · Community Announcements The Panthalassa Demo is now available in Japanese

    This July we Participated in Bitsummit's 13th Edition in Kyoto. There we Debuted the Japanese Translation of our Demo.It has been a tough few months since then and we have been hard at work finishing…

Data from public Steam pages, updated daily; 5 days of history. LaunchRivals is not affiliated with Valve or Steam.