Buy The Eternal Cylinder

If you do not have a Steam account, you will need to download the client from the official website, install it and then create your account. Once you are logged into your account, click on "Add game" in the bottom left corner and then on "Activate product on Steam". After a few clicks on "Next", you can finally enter your CD key, the game will automatically be added to your library and the download will begin.

More information on Steam

To activate your game with Epic Games, log in to your account on their website, click on "Redeem Code" at the top right of the page, and then enter the game's CD key or code in the field provided. Click "Redeem" to verify the code and add the game to your Epic Games game library. You should now be able to download and play the game from your library.

Learn more about Epic Games

To download your game, you must use your game CD key on PlayStation Network. To access PlayStation Network, you need a PlayStation, a broadband internet connection, a PSN account, and a storage device compatible with your console, such as a hard drive, memory card or USB stick. PlayStation Plus subscriptions are compatible with PS5, PS4, PS3, and PS Vita consoles.

Use your code on the Xbox Live network to activate your games or increase your Xbox Live account's credit. To access the Xbox Live network, you need the Xbox One, a broadband connexion, a Xbox Live account, and a storage device according to your console: Hard disk drive, memory card, or USB drive.