Welcome to Civilization, an game about srategy, turns and research, you can choose any country of your choice, you can start from the Stone Age as an hunter-collector tribe, or you can choose another era to start, all the world is counted on squares, every unit will have a energy, that means an unit with 2 of energy can move 2 squares in a turn, also, the battle sistem is counted on attack and defense, the higher the attack, the more damage, the more the defense, the less damage you gonna take.