This guide is only applicable if you've purchased Planet Zoo from FrontierStore.net
First, download Steam and create a Steam account. If you already have Steam installed and have a Steam account you can skip this.
Please download Steam and follow the instructions to install and register for an account: http://store.steampowered.com/about/
Once you have Steam open and you are logged in please do the following:
- Log into the Frontier Store: https://www.frontierstore.net/
- Click on 'My Key Purchases' under 'My Account'
- Click on the 'Login with Steam' button to link to your Steam account
- Click on 'Claim' to add game directly to your Steam account
You can now download Planet Zoo and play it from Steam.
ACTIVATING A STEAM KEY
Once you locate your key, you will be able to activate it on your Steam account and access the game through Valve's service.
For more information on how to do this please see this FAQ