Steam Gift: You receive a gift on your Steam account. You have to accept this Steam gift so ‘Prison Architect‘ can be added to your Steam library and ready for download. Read the store’s description if there are any region restrictions.
Publisher’s Website CD Key: You get a code directly from the publisher’s website. Activate the code on their website to be able to play ‘Prison Architect‘. Be sure to follow the instructions on the website.
Publisher’s Website EU CD Key: You get a code directly from the publisher’s website, but it requires an European IP-Address. This can be done through a VPN (Virtual Private Network) if you’re not in Europe. Be sure to follow the instructions on the website to get your code for ‘Prison Architect‘ activated!
Gog.com CD Key: You need to activate the game on Gog.com with your account. Log in there and activate ‘Prison Architect‘ by putting in the code.