Dive into the underwater depths of a rich and mysterious alien world. From lush and vibrant alien coral reefs to dark depths where giant nightmares lurk, you must craft equipment, pilot new vehicles and build new outposts to uncover the truth hidden in the abyssal depths of planet Eo-III.
All Reviews:
No user reviews
Release Date:
Q1 2026
Developer:
Publisher:

Sign in to add this item to your wishlist, follow it, or mark it as ignored

Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“We believe that involving the player community soon into development will allow us to create the best game possible. Getting early player feedback and iterating on it at various stages of development will help us provide the best player experience and create the game that our community deserves.”

Approximately how long will this game be in Early Access?

“We are planning on being in Early Access for at least 2 years, with a rough estimate of 2 to 4 years, with regular updates throughout this period.”

How is the full version planned to differ from the Early Access version?

“We plan to improve on Exonautis for years to come, our goal being for the full version of Exonautis to have many more biomes, creatures, building types and crafting recipes, as well as additional vehicles and a fully-fledged narrative.
Additionally, getting your hands on the Early Access version will allow us to deliver a more refined and polished final version with more content.”

What is the current state of the Early Access version?

“The Early Access version of Exonautis will provide a solid foundation for an exploration driven survival game set on an alien planet. The Early Access version will include the following features:

- singleplayer survival experience with various craftable recipes and farming
- multiple interactable biomes and creatures
- customizable vehicles
- modular base-building
- beginning of the story

And much more as we continue to publish constant updates!”

Will the game be priced differently during and after Early Access?

“Yes, the price will be increased for the full 1.0 release but it is not yet determined.”

How are you planning on involving the Community in your development process?

“It is very important for us to listen and involve the community as much as possible in the development process. Our Discord server is the best way to share feedback directly with us, however we will also be monitoring and responding to players on the Steam forums and our social channels.
We want Exonautis to become the game you enjoy the most and your feedback will be crucial in us creating this.”
Read more

Download EXONAUTIS Demo

This game is not yet available on Steam

Planned Release Date: Q1 2026

Interested?
Add to your wishlist and get notified when it becomes available.
Add to your wishlist
 
See all discussions

Report bugs and leave feedback for this game on the discussion boards

About This Game

Exonautis is an underwater sci-fi survival game set on an oceanic exoplanet. Dropped into a vast alien open world with nothing but your drop pod and a few supplies to get you started, you have to quickly adapt to this biodiverse alien world to make it out alive.

Explore an Expansive Alien Ocean

Planet Eo-III is home to many biodiverse ecological systems brimming with vibrant fish but also dangerous predators. Every biome in Sector Alpha is different, from lush and sunny coral reefs, to deep and dark ravines and caverns, you need to learn about how each zone works in order to survive and dive deeper.

Survive, Explore and Upgrade

After arriving on Eo-III, you will need to find water, food, yourself warm and most importantly, manage your oxygen. Scavenge the ocean floor for resources, craft supplies and tools such as a scanner, sampler and gun. Upgrade your equipment in order to explore deeper, more dangerous areas.

Uncover the Mysteries of Eo-III

Your name is Melody, and you are a convict sent on Planet Eo-III. If you wish for your sentence to be lifted and be rescued from the planet, you need to first uncover what happened to Atteros, a mining expedition group that suddenly vanished 10 years ago in Sector Alpha, but you soon discover that there is more beneath the surface than originally thought, and that some otherworldly alien species might be involved.

However, Atteros is not the only thing you are looking for. Your crew has also been exiled to this planet, and you need to find them. Luckily, they have left behind a droid named Neon. Repair it and he will become your trusted companion and will be pivotal in your survival and finding the answers that you seek.

Pilot Advanced Vehicles

As you venture further into the ocean and away from the protection of the drop pod, you will need to construct various vehicles to help you travel the ocean expanse and dive to deeper depths. Pilot the Horizon Racer, an agile hoverbike that allows you to traverse both ocean and land at vast speeds, or the Neptune Explorer, a one man submersible that vastly increases your underwater exploration capabilities, and upgrade them to further push the boundaries of your exploration.

Construct Underwater Bases

Surviving on an alien planet is not easy and you will soon need to construct your own base. Luckily, the builder tools allow you to easily do that. Choose different layout modules and components and design your custom habitat, a safe point where you can store and replenish your supplies. Inside your base, you can build various farming modules to grow your own crops and build a self-sustaining system, greatly increasing your survival capacity.

Face the Depths

Slowly you will start to make your way deeper and deeper into the ocean. The shallow, sun drenched starting areas will give way to vast underwater plateaus, and deep descents into the lower plateaus, more than a thousand meters below the surface. As you traverse these vast dark oceanic expanses, you will encounter a seemingly bottomless trench filled with horrors but also the answers that you seek. Will you brave the dark depths and uncover the secrets of the planet?

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10, Windows 11
    • Processor: 11th Gen Intel(R) Core(TM) i9-11900KF or equivalent
    • Graphics: NVIDIA GeForce RTX 3060 or equivalent
    • DirectX: Version 11
    • Storage: 5 GB available space
    • Sound Card: Any generic sound device
    • VR Support: No support
    Recommended:
    • Requires a 64-bit processor and operating system
There are no reviews for this product

You can write your own review for this product to share your experience with the community. Use the area above the purchase buttons on this page to write your review.