Transformers: Fall of Cybertron.
Transformers: Fall of Cybertron takes place during the final hours of a civil war that eventually destroys the planet. The Decepticons have won, driving the Autobots to seek a new home somewhere amongst the stars. As Optimus Prime and his Autobot buddies race to find a way off the planet, Megatron and his dastardly Decepticons seek to rid the universe of all Autobot life. They're big old meanies like that.