A good game but you can improve it with some little details, like the mute button wich doesn't work, the number in the top-right corner should be not selectable.
When you choose "credits" in main menu, the button to return back and game pirate's logo are overlapping
I like this game, great graphisms! I think you can improve your code to reduce CPU's intensity but I know you're more an artist than a coder, so I don't care about :)
THE negative point and very important to me is WASD controls... You force me to spend my keyboard in qwerty... Think of other nationalities ;)
I changed the background :)
For upgrades, I don't want to change immediately the price, I wait to have more comments to make decisions ;)
Thanks for your suggestions =D
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