RedCard Soccer 2003

Cheat mode:
Enter BIGTANK as a name to unlock all teams, stadiums, and finals mode.

Apes team and Victoria Falls stadium:
Defeat the Apes team in World Conquest mode.

Dolphins team and Nautilus stadium:
Defeat the Dolphins team in World Conquest mode.

Kraken team and Nagai stadium:
Conquer Finals mode, and defeat the Martian team and Kraken team.
Patrick316.

Martians team and USAFB001 stadium:
Defeat the Martians team in World Conquest mode.

Matadors team and Coliseum stadium:
Defeat the Matadors team in World Conquest mode.

Ninjas team and Youhi Gardens stadium:
Defeat the Samurai team in World Conquest mode.

Penguins team and South Pole stadium:
Defeat the Penguins team in World Conquest mode.

Robot teams:
Win finals mode to unlock two robot teams.

Seals team and Aircraft Carrier stadium:
Defeat the Seals team in World Conquest mode.

SWAT team and Nova City stadium:
Defeat the SWAT team in World Conquest mode.

Tonatiuh, Xochicalco teams and Tepoztlan stadium:
Defeat the Tonatiuh, Xochicalco team in World Conquest mode.

Zombies team and Haunted Mansion stadium:
Defeat the Zombies team in World Conquest mode.

Finals mode:
Win all matches in World Conquest mode.

Hint: Easy goals:
When you are in possession of the ball, run to the edge of the goalkeeper's area and super shoot (or just shoot). If done correctly, the goalkeeper should catch the ball and keep going in the net with it.
Derrick Sultana.

Set the referee on strict, then go to the 18 yard box. While still on that line, keep on going until you are almost out of bounds. Wait until someone on the other team does something, but make sure you do not get stomped or it will not work. When the other player does something to you, the referee will almost always call it. When kicking it in the corner, the Goalie will act as if it is directly in front of him -- just kick it and it will curve and go in.
Jared Benson.

Hint: Blocking penalties:
Move the Right Analog-stick from side to side to block penalties.
Miguel Ibarra.