Penguins attack is a well-designed defense game that you can play on www.games501.com for free. Your mission is to prevent the incoming penguins reaching the destination. You have to put the defense facilities strategically on the battlefield. If one penguin passes the defensive zone and reach the destination, you will lose one life. What’s more, when you get enough money, you can buy defense towers and upgrades. Of course, you also can sell the exsiting towers.
