Astrum Defense is a skill game on www.flash-game.net in which you try to defend an important base from fierce attack. Astrum is planet with high-grade deposit of uranium, the general trade resource. Industrial guild laid waste its forces over richest region of the recently researched planet. Defense guild has sent you to protect planet from assault. You must defend planet and consolidate influence of the Defense Guild among Guild Union… Ionus is a province of Astrum with an area of 93009 km. The region is divided into four districts: Iont, Ikast, Ioro, and Inus. Once the game starts you must survive in ten waves. You can drag defense power onto your map from the right upper part of the screen, such as light cannon, heavy cannon, howitzer, uranium refinery, missile turret, mortar, and big defensive gun. There will be numerous enemies’ tanks and machines moving towards your base and attacking you. Try to survive and kill all invaders! Good luck!