I like the quantity of options and display settings you gave to players.
Very nice indeed!
As a longtime Nebulus fan: wonderful!
A couple of suggestions:
1) have last completed tower set as default in level selection: after losing third life, one wants to come back to game as soon as possible but it's not easy to remember pressing 'right' N times to get to last tower...
2) (more difficult I suppose) some way to start from last tower, even after game/emulator is rebooted? (e.g. level password)
Thanks!