Good but can you add a tower that cost 999,999 that has 9000 damage and 9000 ROF and 9000 range

Simple and nice and neat. but cant replace towers sell or move them. bogged my comp down around wave 34, all in all its decent.

This is a fail

the difficulty increases too early, the towers cant be moved/sold, and the graphics could be a little better, if this is your first game, you did well, but if you have done this type of game before, you need to improve.

looooooool

simple very simple....
thumbs up if you didn't read the tutorial text
thumbs up if you just spamed the 'next' button
xDxD

Well... its ok...

Firstly, as a point of note, yellow on grey is quite hard to read (opening screen)
The manual tower is quite a good idea, I rather like its little glow, but would it not be better to be able to assign targets to individual towers if needed? That way the user can still attend to other things while ensuring that the targets needing to be concentrated on, are indeed concentrated on.
The speedup for higher numbers seems to be working ok now, as does some of the tower type balance. The main screen is much more aesthetic and I applaud the tooltips, which make the experience way more intuitive.
One very minor bug, after clicking a tower to upgrade, then clicking something else, its level number stays onscreen after the circle has gone.
Still no sound though?