This product is a brand new and unused Seabed Prelude CD Key for Steam.

Immediately after payment, you will be sent a unique and unused CD Key which can be activated on Steam. You can collect this activation code from our Autokey page. Simply enter your code into the Steam client (available free from steampowered.com). This will then grant you to a full digital download of the game.

How does our website work?

CJS CD Keys sell brand new CD Keys either taken directly from brand new sealed copies of the game, or sourced directly from world-leading game publishers. We source our keys in bulk directly from leading distributors and publishers, which reduces shipping costs. This enables us to offer instant online delivery, at extremely competitive pricing.

After you receive your key, you can activate the game on the Steam client (available free from steampowered.com). After you activate the game with the Steam software, you can download the game immediately and instantly.

Benefits of buying from CJS CD Keys:

Instant Delivery

NO payment fees

NO shield fees - we offer a money-back guarantee within the price!

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Region Free

This product key we are selling is sourced directly from the publisher, or an official distributor of the game publisher. The key is completely region free and includes all languages. Region free means that you can activate the product code from anywhere in the world.

About Seabed Prelude:

Bad times came for the inhabitants of the underwater domes.

Year 2022 wasn’t the best year for humanity. As a result of ecological catastrophes most of the land were sent underwater. Many died, but fraction of the people hid inside the city-domes built by The Contructors.



Hundreds years passed since those events. Every half a year, makers visites the cities, and with them - the mythical bathyscaphe full of fuel needed for survival of the city. But today, the bathyscaphe is empty.

Now it’s time for you to shine.

You got the package with the key to this underwater vehicle and you hit the tour de Constructeur!
Save our city from extinction! Find a new source of power for generators!
Reveal the secret behind The Enigmatic Box with the Key!
Learn the rules of the staff and distinguish between similar notes!

Explore stations through the eyes of the drone.

Discover nooks and crannies of the abandoned stations.
Scan objects and uncover the mystery of constructors' outposts.

All this, and even more, in SEABED PRELUDE by MythicOwl!