Wulfram II

"In a place and time far away from where we are today, two intergalactic forces fight for control over a few strategic planets. In large antigravity hovertanks battle lines are being drawn. A commander controls mammoth spaceships orbiting far above the battlefield. New temporary military bases are being built as the enemy is destroying old ones. The goal? Complete annihilation of the enemy. Welcome to Wulfram II, welcome to the struggle of your life."

Free to play indefinitely.