The Callisto Protocol

Description

THE CALLISTO PROTOCOL as a digital activation key for Steam. Redeem the code on your own Steam account to access this edition.

Activation is limited to the eligible countries shown for this product. The key is for the listed platform, not a gift-card balance or a separate gaming account.

How to redeem

1. Sign in to the Steam desktop app with the account that should own this edition. Check that your country is in the listed activation countries.
2. Open Games and choose Activate a Product on Steam. This is product-key activation, not wallet-code redemption.
3. Enter the key from your order and follow the prompts. Check the product named by Steam before completing activation.
4. Find the activated product in Library and install it. For DLC, open the compatible base game and check its downloadable content.

Terms & support

Redemption region

Global

Activation is limited to the platform and countries listed for this edition. DLC and add-ons require the compatible base game unless the edition explicitly includes it.

For a delivery or redemption issue, keep the order reference and error message. Never share the full code publicly.