RedCard Soccer 2003 cheats and cheat codes for Gamecube

Unlock all stadiums, teams, and finals mode.
Go to the "Load/Save" option, after select the "Create/Load Profile"
option. Enter "BIGTANK" as a profile name and save

Finals mode:
Win every matches in World Conquest mode.

Unlockables:
Beat the indicated team in World Conquest mode to unlock
teams and stadiums:

Apes team + Victoria Falls stadium: Beat the Apes team
Dolphins team + Nautilus stadium: Beat the Dolphins team
Martians team + USAFB001 stadium: Beat the Martians team
Matadors team + Coliseum stadium: Beat the Matadors team
Ninjas team + Youhi Gardens stadium: Beat the Samurai team
Penguins team + South Pole stadium: Beat the Penguins team
Seals team + Aircraft Carrier stadium: Beat the Seals team
SWAT team + Nova City stadium: Beat the SWAT team
Zombies team + Haunted Mansion stadium: Beat the Zombies team
Tonatiuh, Xochicalco teams + Tepoztlan stadium: Beat the Tonatiuh,
Xochicalco team

Kraken team + Nagai stadium:
Conquer Finals mode, + Beat the Martian team + Kraken team.