The Prime Wars rage across the face of creation. First the deadly combiners clash, bringing devastation wherever they go. Then the Titans return, bringing with them the power of the Titan Masters. And finally the Primes themselves enter the battle, bestowing their god-like powers upon Autobots and Decepticons alike. Who will emerge victorious from the Prime Wars?

The Prime Wars encompass three consecutive toylines under the general Generations banner: Combiner Wars, Titans Return, and Power of the Primes, as well as the Takara-exclusive toylines Legends and Unite Warriors.