Yeah, that's confirmed. Game makes your PC crash when you get hit by one of the blue boxes.
If you're stuck, CTRL ALT Del out, task manager, delete process. Simple, but unnecessary.
Take this game off.
The point of Kongregate is to share games with a community, not demos or even propaganda for games. Take this off and stop embarrassing yourself, Kongregate.
Uh, I hope you guys realize that after you get the +1 base damage (using few units in a map), a mage can beat even the hardest map...one mage. Give him quickspell and that's it. I think it's bugged or something, but I like it.