It is a grim day for humanity. The creatures that inhabit The Void have pierced the realm of the living. They have focused their efforts on assaulting the human base located in Earth's moon, Luna. You and three of your allies have been selected to stay behind and hold the line while the base finishes it's evacuation procedures.

Thankfully, you are not alone. An unmanned craft lies in wait, orbiting the moon. It's sole purpose is to drop supplies for you and your allies.

Each round, you will be given tools that can be used to construct outposts on the moon's surface. Build and craft the structures needed to hold the line for as long as possible.

The fate of millions rest in your hands.