I agree with you that the menu is not comprehensible in the demo but as you can see here:
in the full version you can easily figure it out .
for the collision boxes i will fix it to fit the tower's mound later on.
and finaly am planing to make many updates to the game including :
- some Player spells to use against enemies .
- Upgrade each tower example : Mage tower to Necromancer or Wizzard (with different spells)
- add spells to bosses.
- perform the gameplay.
- Make the graphics look better.
- and more :)