"Galactic trek" Game

In a distant galaxy, an advanced civilization subjugates galaxies and planets. They anihilate any resistance, enslave the inhabitants and use them to gatter any valuable resource the planet has, before killing them all and exploding the planet. After dominating the Andromeda galaxy, they came to the Milky Way, aiming for the Earth, but a hero rises with the mission to fight them. You are this hero! Explore planets, fight enemies, and free oppressed races.