I've got a bit of a problem with this game. It just doesn't seem to have worked very well. There is no link to it yet from my web site but I've loaded the exe onto the site

http://www.cairnsgames.co.za/defense/defense.zip

I'd love some feedback on how to make the game more fun.

My current ideas:
1. Better collision detection - this would probably require a change to the core DelphiX sprite engine code.
2. Add different types of enemies like a barbarian king.
3. Let enemy hit the archers on their head when they reach them (would not have any impact on the game play though).
4. Add civilians that you may not shoot - possibly change the game end condition to include the civilians killed.

I know that the addition of sound would improve things as well. I do this last.