A Portuguese gaming mag is distributing cd-keys for the 2006 fantasy multiplayer action/RPG hybrid, Dark Messiah of Might and Magic. The key will allow you to register the game on Steam and download it from there. Just follow this link (thanks SavyGamer and follow the instructions. The site is in Portuguese but you will figure it out (with the help of a nice translator if needed). Please be aware that the site is unstable, so you will need to be patient. I got several blank pages and server errors before I managed to get my key. The site is well-known in Portugal, so I guess this offer is legit.

Update: the offer appears to be over now.