Cheat mode
Press one of the following codes at the "New Game" screen.
Note: Enabling the following codes will lock all extra content and block you from Xbox Live game scores.
Code - Effect
Ammo no reloaded
Up, Down, Left, Right, Up, Up, Down
Bonus Cybertron missions
Right, Up, Up, Down, Right, Left, Left
No traffic, police, or military
Right, Left, Right, Left, Right, Left, Right
Play as Jazz Generation 1 version
Left, Up, Up, Down, Left, Up, Right
Play as Optimus Prime Generation 1 version
Up, Up, Down, Down, Right, Right, Right
Play as Starscream Generation 1 version
Right, Down, Left, Left, Down, Up, Up
Unlimited health
Press Left, Left, Up, Left, Right, Down, Right at the menu with the "Campaign", "Bonus", and "Options" selections.
Unlock All Missions
Go to "Campaign -> Bonus Features -> Credits menu" and enter Down, Up, Left, Right, Right, Right, Up, Down.
Unlock Megatron G1 Version
Press Down, Left, Left, Down, Right, Right, Up at the menu with the "Campaign", "Bonus", and "Options" selections.
Unlock Robovision Optimus Prime
Down, Down, Up, Up, Right, Right, Right.
Defeating Megatron
Megatron is the final opponent in the Autobots storyline. He will first be in his jet form and shoot two rounds at you. Use your shield to avoid them. After firing two rounds, he will land. His next attack is ramming. You cannot hit him while he is still focused on ramming. When he stops ramming and stands up in one place looking around, pick up any car and quickly throw it at him. If not done fast enough, he will return to ramming. If that happens, wait for him to stop again. If done successfully, he will now attack you. Hit him in close range combat with your melee attacks. After a few hits, he will return to being a jet. After two rounds of firing, he will again return to the ground. In his second attack, he will use his ball and chain. Throw another car at him. If done successfully, he will attack you again. Use melee attacks on him. He will then become a jet and fire at you again after a few hits. Do the same as before to avoid the attack. After firing at you, he will go back to the ground. His third attack is the flamethrower. Be careful because it will be difficult to get cars to throw at him. When he is hit by a car you threw, he will attack again. Use melee attacks on him. For the last time, he will become a jet again. Use the same strategy used earlier to avoid the attack. He will land after a few hits and attack you with all the attacks he used previously. Throw cars at him after each attack. After that, you will fight him for the final time. Use melee to defeat him.