The game's website hosts a beta version 1.06 with "the first part of the game" for free download. If the game insterests you, but you are undecided, you can try it before purchasing the full version.

Here is the link: http://www.hammerwatch.com/builds/hammerwatch_beta_1.06.zip

Damn, why do I always see stuff like that too late.

The game is nice but I think the controls are clumsy (I don't get why there is no convenient keyboard/mouse control).

If I knew that in advance I wouldn't have bought the game.

Thanks for the link JamesBond007. ^_^