Get ready to defend your fortress against powerful waves of various units. They form huge waves of deadly enemies, that will erase your fortress if ..

Get ready to defend your fortress against powerful waves of various units. They form huge waves of deadly enemies, that will erase your fortress if you won't stop them. Use primary gun to shoot them, additional system will do it automatically. Activate weapons from the bottom panel for targeted strike. Complete levels and upgrade.Mouse or Touch for Play