Fanatical is giving away free Steam keys for DESOLATE, a first person horror survival experience! You just need to subscribe to the Fanatical's Email Newsletter to unlock a key.
EDIT: Please note this giveaway may not work in some countries.
1. Login into your Fanatical account and subscribe to their newsletter
2. Link a valid Steam account and unlock your Steam key!
3. Launch the Steam client and click the Games menu option.
4. Choose "activate a Product on Steam" to redeem your Steam key.