Advance Wars Advanced mode
Hold Select before entering campaign mode to play in advanced mode. In this mode, enemies are more difficult to defeat, but you receive more conis for completing each mission.
Bonus modes
Successfully complete all missions in field training mode to unlock "War Room", "Campaign", "Design Maps", and "Stats" options on the main menu.
Bonus CO's in multi-player mode
Successfully complete campaign mode, then go to battle maps to find more CO's that you can purchase for multi-player mode.
CO Drake
Enter campaign mode and select Andy. Successfully complete the Captain Drake, Naval Clash, Wings of Victory, and Battle Mystery campaigns and CO Drake will become available for purchased for 50 coins in the battle maps section.
CO Eagle
Enter campaign mode and select Sami. Successfully complete the Captain Drake, Naval Clash, Wings of Victory, Battle Mystery campaigns, and the secret "Rivals" battle and CO Eagle will become available for purchased for 80 coins in the battle maps section.
CO Grit
Enter campaign mode and select Max. Successfully complete mission 4 and CO Grit will become available for purchased for 50 coins in the battle maps section.
CO Kanbei
Successfully complete campaign mode and CO Kanbei will become available for purchased for 50 coins in the battle maps section.
CO Sonja
Successfully complete Sonja's secret missions and the campaign in campaign mode and CO Sonja will become available for purchased for 60 coins in the battle maps section.
CO Strum
Purchase CO's Drake, Eagle, Grit, Kenbei, and Sonja and CO Strum will become available for purchased for 100 coins in the battle maps section. Note: CO Strum can only be used in "Vs." mode. He cannot be used as your CO to play war room battles.
Sonja's secret missions
Successfully complete CO Kanbei's missions in a limited number of turns to unlock Sonja's secret missions. Successfully complete Kanbei Arrives! in 8 or less turns, Mighty Kanbei! in 10 or less turns, and Kanbei's Error? in 12 or less turns. If you complete all of these missions within the time limit, you will continue into a hidden path in the story line.
In-game reset
While playing a game, press Start + Select + B + A.
Deleted saved games
When turning on the Game Boy Advance, hold L + Right + Select.
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