We are offering Mount&Blade through a try before you buy model.
You can download the game and start playing right away. What you download is not
a demo, it is the full game. There is, however, a level limit at 7. When your character
reaches level 7, you can start a new game or, if you decide you like the game well
enough, go on and buy a license online. As soon as you buy a license you will obtain
a serial key which will remove the level limit. You will not need to download the
game again.