I scored 16897!! It's good right?
I really enjoyed playing your game. The only thing I would do differently would be to let the player select a turret with a fixed button (eg: keyboard button "1" = green turret, keyboard button "2" = red turret and keyboard button "3" = blue turret) so I don't have to always check the bottom of my screen.
Great job!!
(nice thumbnail btw hehe)