Not a bad game, hope you improve it more.
Caesar2k1 has some good suggestions, I'd like to add a few of my own, or slight mods to Caesar2k1's ideas.
- A few music selections (No pressure)
- A mute for sound effects, and a mute for music (If added)
- Make the catipults automatic (Serious I found them very useless manually using them, clicking was more effective, naturally increase fire delay to compinsate. Maybe make an upgrade for a little extra speed). I like Caesar2k1's idea about upgrades and enemies. Maybe like catpults and arches where they don't have to move in so close to start hitting. Increase the view rang and peek the archer range upgrade to 10 (Seriously, bows can only go so far before the bow strength is too much for its user) But this also works with Caesar2k1's health suggestion. Start with just archers then you have to expand the castle size to make room for stuff like catipults, mages, maybe even a smith for weapon power upgrades to take out those pesky tougher enemies. Oh, other stuff, add crossbows (more range, slower, both sides), armored knights (Tougher melees enemies), maybe even mage enemies that cast fireballs at your castle from a super range. (Outta room to cont..)