Complete Naboo Proving Grounds, The Royal Escort, Taking The Offensive, Midnight Munitions Run, Rescue On The Solleu, and The Final Assault missions with a silver medal to unlock the Canyon Sprint bonus mission. In the Canyon Sprint mission you play as Rhys in the N-1 Starfighter and you're in a race through the canyon on Naboo. You get to race against the other main characters in the game, Vana, Nym, Essara, and Reti. Depending on who you beat to the finish line at the end will depend on the medal you receive. If you beat Essara and come in first you will get a gold medal.
Charm's Way bonus mission
Complete The Royal Escort, Contract Infraction, Piracy Above Lok, Taking The Offensive, The New Resistance, and The Final Assault missions with a bronze medal to unlock the Charm's Way bonus mission. In the Charm's Way mission you must defend a fleet of escaping freighters from waves of Trade Federation Droid Fighters. The lead freighter is captained by Reeve Dallows, Rhys' father. You play as Rhys in the Naboo N-1 Starfighter.
Digital director in missions
Password: DIRECTOR.
Grim Fandango Hotrod
As a special bonus for coming in first in the Canyon Sprint Bonus Mission where you race through the canyons of Naboo against Reti, Nym, Vana and Essara a giant hotrod from the Lucas Arts PC game Grim Fandango. You have to come in first place, beating Essara to be able to fly around the giant hot rod for a minute or so once you cross the finish line.
Invincibility
Password: MINIME
Jar Jar Mode
Select the codes option and enter "JARJAR" to enable Jar Jar mode.
Outpost Attack bonus mission
Complete all 14 regular missions with a bronze medal to unlock the Outpost Attack bonus mission. In the Outpost Attack mission you must defend an outpost from swarming droid fighters. It is a timed land based mission where you lose points for losing buildings and gain points for destroying droids. Medal ranking depends on the score you achieve.
Space Sweep bonus mission
Complete all 14 regular missions with a silver medal to unlock the Space Sweep bonus mission. In the Space Sweep mission you are in the middle of an asteroid field and you get points for blowing up asteroids, mines, and flying saucers.
Unlock Darth Maul's Infiltrator
To be able to use the amazing to fly and super powerful Infiltrator ship in every mission in the game you have to get Gold in every mission in the normal game. This is easily the best ship in the game. It makes the Hard Difficulty level seem easy.
Unlock Everything
Choose Code Setup under Options, and enter "EUROPA". If done right it will confirm.
Unlock The Guardian Mantis
To be able to use the Guardian Mantis ship in every mission in the game you have to get Gold in the following three missions:
Contract Infraction
Secrets On Eos
The New Resistance
Unlock The Havoc
To be able to use the Havoc bomber in every mission in the game you have to get Gold in the following five missions which you use the Havoc in the normal game:
Piracy Above Lok
Valuable Goods
Eye Of The Storm
The Crippling Blow
Last Stand On Naboo
Unlock The N-1 Starfighter
To be able to use the N-1 Starfighter in every mission in the game you have to first get Gold in the following six missions in which you use the N-1 in the regular game:
Naboo Proving Grounds
The Royal Escort
Taking The Offensive
Midnight Munitions Run
Rescue On Solleu
The Final Assault
Unlock Two-player Canyon Race
To be able to play the hidden two-player games you must first beat the normal game on any difficulty level. Getting bronze silver or gold in the missions is not necessary to unlock the two-player missions on the Bonus Missions Screen. Unfortunately once unlocked in you must still get gold in every level of the normal game to play the bonus level. In the Canyon Race Bonus Level you and another player race down the canyons of Naboo using a split screen.
Unlock Two-player Capture The Flag
To be able to play the hidden two-player games you must first beat the normal game on any difficulty level. Getting bronze silver or gold in the missions is not necessary to unlock the two-player missions on the Bonus Missions Screen. Unfortunately once unlocked in you must still get gold in every level of the normal game to play the bonus level. In Capture The Flag you and a friend battle it out in the skies of Naboo. Rules follow basic Capture The Flag rules where players try to steal an opponents "flag" and return it to their own airspace.