Marathon | CIS
Marathon · Steam games · CIS
Description
Scavenge the lost colony of Tau Ceti IV as a bio-cybernetic Runner in a PvPvE survival extraction FPS from the creators of Halo and Destiny.
Instructions
To activate a key on Steam:
1. Launch the Steam client software and log in to your Steam account.
2. Click the Games menu option at the top of the Steam client.
3. Choose Activate a Product on Steam...
4. Follow the onscreen instructions to complete the process.
To activate a key on the Steam website:
1. Visit https://store.steampowered.com/account/registerkey
2. Follow the onscreen instructions to complete the process.