For those who ordered the Crazy Machine Bundle from the Indie Store:
My keys for Crazt Machines 1.5 and Crazy Machines weren't showing (Steam keys for Crazy Machines 2 and Crazy Machines Elements did show up). So I sent an email, this is the reponse I got back:
The serial numbers for those products are out of stock. Do you mind waiting a couple of days till we receive other keys from the publishers? If not, in alternative, we can offer you two of these other Steam games at your choice, instead of the two Crazy Machines games:
Cargo! The Request For Gravity
The Whispered world.
I told them I didn't mind waiting, and that I would post the email here to hopefully cut down on any duplicate emails asking the same question. Just an FYI.