Ty

If this is from the fanatical bundle then the winner won't be able to mark this as received as he won't actually get a key that activates Crazy Machines 1.5.
Instead: "Crazy Machines 1.5 will appear in your Steam library as Crazy Machines 1.5 Inventors Training Camp and Crazy Machines 1.5 New from the Lab. There will not be a separate library entry for Crazy Machines 1.5".
Therefore I'd suggest deleting this giveaway and make it again for either of the other two games instead.

Thanks for the chance!