After you install the game "new game" click, you need to make one king, that castle in the attack to say that aliens were supposed to protect. "next" click to buy the weapons and ammunition to where. Purchase your weapon from the top line, middle line of the weapons purchased plenty of ammunition, the castle from the bottom line repair, shields and bombs you can buy. The top right you can see how much money you have, before you can buy expensive things and make money should be part of. Weapons and ammunition from the job again "next click on" start the war. Keep your game play with the keyboard and mouse castle would. Would you shoot with mouse, right and left arrow keys to switch between weapons you can buy, with the space key if you purchased the bomb at the bomb can. Now the creatures and nibble your castle to prevent the destruction of the castle, to protect your castle!