I bought Creeper World 3 a while back way before the release on steam. Due to the amount of time which has passed I no longer have the e-mail. Recently I built a new computer which comes with formatting my hardd rive, so I can't go to the right file location to retrieve my key.
Is anyone able to be of assistance?
http://knucklecracker.com/forums/index.php?topic=4976.0