10 waves 131 kills
In the year XXXX planet earth was driven to the point of no return. All resources, wildlife and plant life dead. billions of humans dead. All hope was lost.
But that all changed when the mother brain arrived. A mysterious object fell out the sky with all the answers. It gave new life to the earth and new hope to all the survivors. Within a short time the earth started to strive beyond comprehension.
But something bad followed. portal started appearing and out came zombified alien beings. They were hell-bent on destroying the mother brain.
Protect the Mother Brain at all cost!!!!!!!