Enter the word following the team/stadium as your Profile Name to unlock it. The words are case-sensitive (Note: You will need multiple profiles to unlock all of them)
THIS ONLY WORKS ON 4th DOWN.
While in game, select Field Goal for your play. WHILE THE BALL IS KICKED IN THE AIR, press start, then save and quit. When you reload the game, the computer will have the ball going the opposite direction with the down that you had when you kicked the field goal.
Hold the L + R + Black + White at the ''Press start button'' menu to go into demo mode.
To unlock the Roman Colliseum, play Dynasty Mode until 2015 Off-season.