I've been meaning to buy this game for ages, and it's currently at the lowest price it's ever been (according to isthereanydeal.com).
Currently there are no steam codes available, however the website has said it will send them out once available. The following message was provided:
"Where's my Steam key? - The order was put on hold because available Steam keys have temporarily run out, and you will receive an email when the order has been completed!"
Any of you with prior experience of how long this should take should chirp up, as I haven't had to wait with WinGameStore before.
Edit: For anybody wondering, I did get my code within 24 hours of submitting the order. So nothing shady there!
Excellent game, well more of a sandbox really, there is not a goal / objective etc as such. But it is a wonderful imagination sink. Grab some mods and customise the look and feel and you get a game you can really spend some time playing.