99 rating in all attributes in Superstar mode:
Go to the Creation Zone, and select the "Create New Player" option.
When creating a player, make him a rookie, then select your desired
team. When it is time to rate your player, set him to 99 in all
attributes. When finished, go to Superstar mode, select "Use Rookie
As Superstar", and find your created player from the menu.

Cheat Codes:
At the main menu, select "Options", "Cheats", "Enter New Cheat", then enter one
of the following codes to unlock the corresponding cheat option. If you entered
the code correctly, a message will appear.

Unlock All Characters
Press Blue(2), Green(2), Red, Green, Red, Yellow.

At the main menu, select the "Cheat Codes" option. Then, enter one of the
following codes to activate the corresponding cheat function:

Play as G1 Starscream
Enter Circle, X, Circle, R1, Triangle, R1 as a code to unlock G1 Starscream.
Play as Gold Optimus Prime in Multiplayer mode
Enter Up, Down, Left(2), Right, Down as a code to unlock Gold Optimus Prime in
Multiplayer mode.
Play as Gold Megatron in Multiplayer mode
Enter Down, Up, Right(2), Left, Up as a code to unlock Gold Megatron in
Multiplayer mode.

Cheat mode:
Select the "My 2010 FIFA World Cup" option, then choose "EA Sports
Extras", and "Unlockable Code Entry". Enter one of the following codes
to unlock the corresponding bonus: