It's a cool idea, but the hover drone is actually designed to be the "soldier" in this game. The problem with soldiers are that they have moving limbs - and animation is extremely expensive both in money and in actually drawing on the screen. But good idea, maybe for a future version of Conquer Mars!
Super tanks cost 2000 credits. If you build lots of hover drones (2000 worth) you should be able to kill it pretty easily. The artillery towers are also pretty good against them.
It's a cool idea, but the hover drone is actually designed to be the "soldier" in this game. The problem with soldiers are that they have moving limbs - and animation is extremely expensive both in money and in actually drawing on the screen. But good idea, maybe for a future version of Conquer Mars!