Hi ThunderSnapper (and everyone else having Steam key issues),
We apologize for all the recent issues with Steam keys. The game's pool of Steam keys has been refilled. If you weren't able to get one before, please click the request key button on your purchase page and it should work now.
If you continue to experience problems receiving a Steam key, please leave a comment here or use our contact page: http://nuclearfishin.com/fourhorsemen/contact/
Thanks for your patience!