Nice game
I have to admit, I usually HATE turret games and avoid them.
Yet, this one I figured eh cant be the worst. I was right! It's not the worst.
The fact you get upgrades free dependant on level gives you a goal. Got to level 13 before being overwhealmed. It was the reload time that got me. I should of upgraded my stuff more, but...I was saving the money for uber upgrades when I hit level 20 with the super nuke.
Anyway great game. 10/10 5/5.