Update: Add Canons 4x Damage ,buy additional 2 Turrets with 2,5x Damage,Difficulty is increased after 10 min and after 20 min, can also be changed back to normal medium and hard Switch Between two Classes Instant Reload,and Build Mode(must be purchased ) Eliminate creatures to get gold, stone, wood, metal Protect your base from attacking creatures Prevent more than 7 creatures from reaching your base - otherwise it's game over. Improve your defense with upgrades to save your base!