Your fortress is under attack by a rogue army of chickens. You've got to assist us immediately! In order to protect your fortress from the chickens, you'll need to merge and improve your guns. The last monster chicken will appear after several waves of chickens have been defeated. In order to protect your castle, you must assemble all of the guns in your arsenal. So, are you all in, or are you going to back out?
Use the mouse (in-game tutorial)