I've a code for a copy of King Arthur: The RPG Wargame which can be redeemed on Steam. I already bought it (and rather enjoyed it) when I saw it in the Steam sale a few months back.
Caveats:
You must have a Steam account, and Steam installed to redeem this
1 code only available, first come first served
It's not a bad game at all, especially if you're into Arthurian legend and a strange mix of strategy and RPG. It's a relatively substantial download though, so those on a capped internet connection may not want to bother.