Transformers: Rise of the Dark Spark is a crossover with the Transformers film series and the video game series, consisting of Transformers: War for Cybertron and Transformers: Fall of Cybertron. The Dark Spark is a powerful artifact that is capable of ripping holes in dimensions, which brings two Transformers universes together. The story takes place before the Ark is launched in Fall of Cybertron, while in an alternate universe it takes place before the events of Age of Extinction. (wikipedia)