Bowmaster - Defend your castle game

Another defend-your-something shooting game, well made and addictive. In this one you have to defend your castle and the theme is medieval.
Your weapon is a bow bound on top of your castle. Using it against the hordes of enemy troops coming to take you down you gain XP(experience) points that you can use at the end of each level to upgrade your arrows, buy archers to fight with you, increase the range of your arrows and many other options.
The visuals are moderate and similar to most of the flash games one can encounter on the web. I like the enemy soldiers that look like the Uruk-Hai from Lord of the Rings. Probably the designer is inspired from the movie.
The game doesn't feature in-game music, but the sound effects are cool. You can hear the bow hiss as it travels through the air, the enemies moan with a funny way when they get hit, the bomb arrows exploding and so on.
To aim, drag the transparent-green circle from your bow and release it at the desired position to shoot. A mark will show you where you left the circle the last time so you can adjust your next shot better.
And there's a lot of things that you will figure out while playing the game. I absolutely recommend it, but be cautious because there's a great chance that you will be playing for a long time. So be sure you don't have anything get done before you start.
The game is coming from Jason Reinsvold. Here's the original page: Jason Reinsvold's Bowmaster.
Note: Bowmaster 2 is coming soon. Check out this link for up-to-date information.