Pre Order activation key will be available at the planned release date:
21 Jun 201604:00
Machines that sort! Machines that build! Machines that combine! With Fallout 4 Contraptions, use ...
Machines that sort! Machines that build! Machines that combine! With Fallout 4 Contraptions, use conveyer belts, scaffolding kits, track kits, even logic gates to construct crazy and complex gadgets to improve your Wasteland settlements. The Contraptions Workshop also includes all-new features like elevators, greenhouse kits, warehouse kits, fireworks, armor racks and more!
In order to activate this game, you will require a third-party 'Steam' account. For full details on how to activate please follow this link: https://support.steampowered.com/kb_article.php?ref=5414-TFBN-1352