Was fun for a while, but gets repetitive after 30 rounds.
I have a weekly addition to this game, I just can't stop my self. I blame the government.
This game is AWESOME!!!!!!!!
Easy to win, you just have to try new things. Great game though. Take a look a what the destruction value is for any given upgrades and you will be on your way.
And for all you people saying it's impossible. I beat it without losing any lives on hard every time. Don't blame the game. Just up your strategy.