Good Defense Game.
Turret animation was good. Color used in the game was excellent. Music was nice, however you might want to add variety. Good job on the mute button. Sound for the turrets was OK. It got repetitive around level 30, try adding more variety in turret customization, skins for enemies and friendly turrets, messages throughout the game each round as other turret games do. A create a map feature would also be nice.
Hotkeys for this game would be nice. Space=Start round. 1=buy trash trash tower...etc.
I seem to be having trouble with the Paralyze Tower.
Also, once you click on a tower that your gonna buy that tower stays selected until you buy it or click on a previously bought tower. Not a big deal but it's annoying.
Things to be worked on.
-When you first jump in the difficulty is set pretty high, it makes it harder to save up money for the much needed upgrades,
The fix: Add a few "starting" waves.
-I can't see what type of enemies I'm fighting so I don't know when my specific towers will be useful.
The fix: Make a scroll over for enemy details. Put in what types of enemy your going to fight the next round.
An all around good job makes for an OK game. Little tweaks here and there would make this game incredible.