Description: City Siege 4: Alien Siege is the fourth installment of the popular, fun-addicting shooting game. You are on a mission on a far away planet. Take your awesome laser gun and build upgradeable troops in order to battle all enemy alien units and rescue the la Tags: friv 4 friv 11 friv 44 friv 59 friv 66 friv 87 friv 147 friv 149 friv 4704 friv 2016