Up to 80% Off during the Stardock Autumn Sale
https://store.steampowered.com/publisher/stardock
from 
Stardock Forums
Stardock Forums
Our Autumn Sale is Here - Get Up to 80% Off*
STEAM KEYS ARE PROVIDED WITH PURCHASE
In this massive RTS game, command vast armies fighting for control of entire worlds. Control the forces of Earth, the mechanical AI Substrate, or the enigmatic Post-Human Coalition as you battle across the solar system in single player, cooperative multiplayer, or competitive multiplayer.
GAME BUNDLES:
STARDOCK SOFTWARE:
*Sale ends 10.08.26 at 1PM ET.