Unlock F.C. Sega Team:
Highlight the following teams at the 'Team' select screen in order and press 'Start' over each one before moving to the next: Spain, England, Germany, Argentina. If you have done it correctly you will be able to select F.C. Sega as a team.
Unlock Big Heads:
Press Up, Down, Left, Right, 'Long Pass' when the commentator announces the competing teams to enable this effect. If you are playing a 2-Player game both players must enter this code.