Panthalassa
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About Panthalassa
Panthalassa is an adventure game set in an alien underwater world. You play as Magellan, also known as MAG, an autonomous exploratory submarine that suffers a catastrophic malfunction and awakens in a highly advanced body in an unfamiliar world. MAG now has technology they do not recognize and emotions they did not have before.
Discover the world
You search for answers about where you are, whose body you inhabit and whether you can return home. The world holds secrets about a mysterious civilization and the body’s previous inhabitant, with more to uncover than MAG may expect.
Explore and solve puzzles
You see the world through a machine’s perspective and navigate strange user interfaces where the digital and physical worlds clash. You find and catalog Aquatic Specimens, solve puzzles and uncover information by searching the world’s hidden corners.
Frequently asked questions
The best price for Panthalassa is $13.99 at Steam. It is the only shop with an offer that activates in your country.
The minimum requirements for Panthalassa are: Windows 10, Intel Core i3, 4 GB RAM, 2 GB storage. It runs on Windows only. The recommended specs are in the System requirements section.
No. Panthalassa is a single-player game.
Yes. Valve rates Panthalassa as Verified on the Steam Deck: it runs well out of the box.
Yes. Panthalassa is the full base game. You need nothing else to play it.
Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.
Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.











