This is how to activate the Imagine Earth Early Access version on Steam if you have a Key:
![steam-activation-step-1](http://www.imagineearth.info/wordpress/wp-content/uploads/2014/05/steam-activation-step-1.jpg)
Go to SteamPowered.com and and click on install steam.
![steam-activation-step-2](http://www.imagineearth.info/wordpress/wp-content/uploads/2014/05/steam-activation-step-2.jpg)
In the installed Steam client you click on „Games“ and then „Activate a Product on Steam“ enter the given Steam Code to unlock the game.
If you do not have a key right now you can buy the game here.