- Infinite ammunition
At the menu with the 'Campaign', 'Bonus', and 'Options' selections, press Up, Down, Left, Right, Up(2), Down. If you entered the code correctly, the screen will flash.

- All missions
At the menu with the 'Campaign', 'Bonus', and 'Options' selections, press Down, Up, Left, Right(3), Up, Down to unlock all missions, including the two Cybertron missions. If you entered the code correctly, the screen will flash.

- Cybertron missions
At the menu with the 'Campaign', 'Bonus', and 'Options' selections, press Right, Up(2), Down, Right, Left(2) to unlock two Cybertron missions. If you entered the code correctly, the screen will flash.

- No traffic, police, or military
At the menu with the 'Campaign', 'Bonus', and 'Options' selections, press Right, Left, Right, Left, Right, Left, Right. If you entered the code correctly, the screen will flash. The only vehicles remaining will be parked.

- Infinite health
At the menu with the 'Campaign', 'Bonus', and 'Options' selections, press Left(2), Up, Left, Right, Down, Right. If you entered the code correctly, the screen will flash.

- Secret icon locations
Autobots


The Suburbs



More Than Meets the Eye



Inside Hoover Dam

The Last Stand



Decepticons


SOCCENT Military Base



The Hunt for Sam Witwicky



A Gathering Force



City Of The Machines


- Play as Generation 1 Cartoon Optimus Prime
At the menu with the 'Campaign', 'Bonus', and 'Options' selections, press Down, Right, Left, Up, Down(2), Left to unlock Generation 1 Cartoon Optimus Prime. If you entered the code correctly, the screen will flash. Select the 'Bonus Features' option, then choose the 'Generation 1' selection to use the new appearance. Alternately, collect all the Autobot secret icons in the Autobot campaign.

- Play as Generation 1 Starscream
At the menu with the 'Campaign', 'Bonus', and 'Options' selections, press Right, Down, Left(2), Down, Up(2) to unlock Generation 1 Starscream. If you entered the code correctly, the screen will flash. Select the 'Bonus Features' option, then choose the 'Generation 1' selection to use the new appearance. Alternately, successfully complete the Decepticon campaign.

- Play as Generation 1 Robo-vision Optimus Prime
At the menu with the 'Campaign', 'Bonus', and 'Options' selections, press Down(2), Up(2), Right(3) to unlock Generation 1 Robo-vision Optimus Prime. If you entered the code correctly, the screen will flash. Select the 'Bonus Features' option, then choose the 'Generation 1' selection to use the new appearance. Alternately, successfully complete the Autobot campaign.

- Overcomeing the cement truck Decepticon
When you are fighting the cement truck Decepticon as Ironhide, transform and run him over to knock him down. Then, pick him up and throw him.

- Play as Generation 1 Jazz
At the menu with the 'Campaign', 'Bonus', and 'Options' selections, press Left, Up, Down(2), Left, Up, Right to unlock Generation 1 Jazz. If you entered the code correctly, the screen will flash. Select the 'Bonus Features' option, then choose the 'Generation 1' selection to use the new appearance.

- Play as Generation 1 Cartoon Megatron
At the menu with the 'Campaign', 'Bonus', and 'Options' selections, press Down, Left(2), Down, Right(2), Up to unlock Generation 1 Cartoon Optimus Prime. If you entered the code correctly, the screen will flash. Select the 'Bonus Features' option, then choose the 'Generation 1' selection to use the new appearance. Alternately, collect all the Decepticon secret icons in the Decepticon campaign.

- Overcomeing 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.