X-Morph: Defense - Survival of the Fittest

This add-on includes a new Survival campaign with 5 maps specifically crafted for this adrenaline pumping game mode.

BRITAIN - Fight an endless enemy assault in a rain soaked maze of cottages and canals.

FINLAND - Winter is already here, but it's not the cold that is your worst enemy.

SOUTH AFRICA - A dense night is waiting to be lit up by countless enemy explosions.

NETHERLANDS - Survive as long as you can in this seemingly idyllic landscape.

FRANCE - A city labyrinth that is about to become a graveyard full of metallic corpses.

Source:

Steam Store Description