You are the Bubble City Mayor. The life was fine and peaceful until... the alien battleships flooded the clear blue sky. The panic has stricken the people, the roar of jet engines and falling bombs is all around... Your Bubble City is under attack! Stand up, everybody, and fight! Show the enemy that your bubbles are not weak and can save themselves. Shoot enemy bombs and save Bubble City. Click the bubble in the City to make it shoot. Frontier Guard will require from you not only the acuity of your vision and quickness of reaction, but also ingenious strategical moves. Download this free exciting arcade-strategy mix from Absolutist. The game requires Macromedia Flash 7 Player to run. Follow the link and free download Frontier Guard now.