BoxDude TD DX

People became too much for living on the same planet. You are sent to colonize nearby. Under your control were four planets: green, lava, dark and sand. On each of which you have proved outpost. But the locals do not agree with you divided the land. And I begin raids on your subordinates. Your task is to build defensive towers, and to hold out until reinforcements arrive. Pass as little as possible enemies in his camp.