Abyss stadium
Create a profile and enter "Odyssey2" as a name. If you entered the code correctly, a message will appear.

Millennium stadium
Create a profile and enter "Odyssey" as a case-sensitive name. If you entered the code correctly, a message will appear.

New Seattle stadium
Create a profile and enter "SeaTown" as a case-sensitive name. If you entered the code correctly, a message will appear.

Practice stadium
Create a profile and enter "Dome" as a case-sensitive name. If you entered the code correctly, a message will appear.

Roman Coliseum stadium
Create a profile and enter "LionPit" as a case-sensitive name. If you entered the code correctly, a message will appear.

New Seattle stadium
Complete five years in dynasty mode to unlock the new Seattle stadium.