From Wikipedia: Transformers Revenge of the Fallen: Decepticons is an action-adventure game based on the 2009 live action film Transformers: Revenge of the Fallen. It is the Nintendo DS port of Transformers: Revenge of the Fallen, but follows a different storyline and focuses exclusively on the Decepticons. It was developed by Vicarious Visions alongside Transformers Revenge of the Fallen: Autobots, which follows the Autobots; the two games share some basic similarities, but overall feature different characters, missions and locations. Both games were published by Activision in June 2009, and received mixed reviews.