For this weekend only, the price of TaleWorlds' sandbox RPG on Steam has been reduced to $7.50 (from the original recession-unfriendly $29.99 tag). A demo for Mount & Blade can be downloaded off Steam if you have the client installed, else just grab the 380 MB file from TaleWorlds' official site.

Mount & Blade on Steam

Mount & Blade official site (TaleWorlds)
Mount & Blade Gameplay Trailer (Gametrailers)