As with Transformers: The Game, Revenge of the Fallen features two separate campaigns; one depicting the actions of the Autobots, and the other the actions of the Decepticons. The game expands on the movie plot with additional missions and characters. Unlike its predecessor, Revenge of the Fallen features a hub-like, non-linear mission progression. This allows the player to choose what missions they would like to accomplish and where in order to further drive the story. Multiplayer features five different modes. "Deathmatch" allows players to choose any character in a free-for-all battle. "Team Deathmatch" features Autobots vs Decepticons. "Control Points" features gameplay with teams battling for control of specific areas to gain points. "One Shall Stand" is similar to Team Deathmatch; the difference is that the objective is for a player to take out the enemy leader (Optimus Prime or Megatron) while protecting their own. The final mode, "Battle for the Shards", features Capture the Flag-style gameplay; teams search for shards of the AllSpark and return them to their base to earn points.
Synopsis
Autobot campaign
At the start of the Autobot campaign, NEST Pilot Sgt. Epps is reporting Decepticons in Shanghai, China. Upon the arrival of the Autobots, Major William Lennox informs them there are Decepticons in the perimeter that must not escape, and Ironhide is sent to fight them. Ironhide then battles and defeats Sideways, but later goes missing. When Optimus Prime gets word of this, Ratchet heads out to find him and get him to safety. After locating Ironhide, his power is recharged and another Decepticon battle ensues. After annihilating Decepticon troops, Optimus battles Demolishor. Upon his defeat, Demolishor states that "The Fallen shall rise again."
The Autobots then head to Burbank, California where a previously unknown fragment of the AllSpark has surfaced in possession of Mikaela Banes. When the Decepticons detect the fragment, Bumblebee is sent to protect Mikaela. Meanwhile, the Autobots learn that a second Allspark fragment held by the Americans has been stolen. Soundwave learns of Megatron's location in the Laurentian Abyss and transmits it to the Decepticons. Breakaway is sent to defend the carrier fleet Deep-6 which guards Megatron's corpse from the Decepticons. Despite his efforts, Megatron is reactivated.
On the East Coast, Sam Witwicky is kidnapped by the Decepticon troops and is taken to an industrial park near his college. Ratchet manages to locate Sam in an abandoned foundry and sends Bumblebee the coordinates. Bumblebee rescues Sam and takes him to the extraction point, upon which Grindor attacks Bumblebee. Following Bumblebee's victory, Optimus decides to give the humans a Cybertronian weapon called the Axiom Gun to help combat the growing Decepticon threat. He personally escorts the Axiom Gun to NEST headquarters. After getting the convoy to their destination, the Autobots escort Sam to meet with former Agent Simmons. With intel from Simmons, Sam has Bumblebee take him to the museum to seek out a robot named Jetfire. While Sam looks for Jetfire, Bumblebee defends the museum from the Decepticon troops. Jetfire emerges from the museum and takes Sam through the trans-dimensional Space Bridge to Cairo, Egypt; the Autobots then follow.
Jetfire reveals that the Dynasty of Primes have constructed a machine called the Sun Harvester hidden in an Egyptian pyramid. He says the device destroys stars to harvest their power, converting it into energon. Upon arrival in the outskirts of Cairo, the Autobots search for Sam while evading Decepticon troops. After locating Sam, Optimus Prime takes him to the Tomb of the Ancients. While Sam is in the tomb, Optimus and Jetfire defend it from Megatron and Starscream. Optimus defeats them, but they escape after Megatron impales Jetfire. The Fallen reveals himself and the Sun Harvester, powering its systems up and begging the harvesting of the Earth's sun. A dying Jetfire lends his wings and parts to Optimus in order to help Optimus defeat The Fallen. Elsewhere, Bumblebee ends up fighting and defeating Devastator. Optimus battles The Fallen, defeating him by impaling his face with his blade. The Fallen falls into the Sun Harvester and destroys it. With the Ancient Transformers avenged, Ratchet informs Optimus that Megatron escaped on a ship to a distant galaxy. Optimus then salutes his troops for their good work in stopping the Decepticons.
