Characters...
	Cheat Code...
	Flashback...
	Japanese ROM...
	Music test...
	Sound test...
	Various Trophies...

Successfully complete the game as Homer.

Press Up(2), Down(2), Left, Right, Left, Right, Circle, X during the title screen. The message "Excellent! All Items Unlocked" will appear to confirm correct entry. All the items in the "Cool Stuff" menu, the Japanese ROM, and all stages will be unlocked.

Successfully complete the game as Bart.

Successfully complete the game.

Successfully complete the game as Lisa.

Successfully complete the game as Marge.

Complete the following tasks to unlock PlayStation 3 trophy rewards.

Trophy	How to unlock
"Excellent" (Gold)	Complete the game on Expert difficulty in individual Quarters mode.
Battling Seizure Robots (Bronze)	Playing from stage 1, defeat the battling robot.
Best Score Ever (Silver)	Earn 250 points (US) or 25,000 points (Japan) in a game.
Bongo's Angst (Bronze)	Playing from stage 1, get Bongo to appear in 4 different levels.
Dysfunctional Family (Bronze)	Play in a 4-player match with three other people.
Easier Than Arm Wrestling (Bronze)	Defeat the Wrestler without any player dying.
Falling For Smithers (Bronze)	Playing from stage 1, fall through the deck after Smithers.
Helper Monkey (Bronze)	While performing a Team Attack, damage 25 enemies.
It Tastes Like Burning (Bronze)	Hurt Smithers with one of his own bombs.
Like Taking Candy From a Baby (Silver)	Complete the game four times, once with each character.
Mr. Sparkle (Silver)	From stage 1, make it to the stage 3 bosses in Survival Mode with the Japanese ROM.
Release The Hounds (Silver)	Complete the game in 30 minutes or less.