Enemies are approaching closer and soon they will reach your base. Stop them by strategically placing from defense armies to turret towers in their way.
Stop the invasion before the enemy reaches our cities! Alien life forms have been detected and our army has mobilized its defensive tower forces to protect us.
You are the commander of a space battle station. Below you, on the planet's surface, enemies are trying to capture deadly missile silos. Don't let them seize these silos. Protect them at all costs!
