Justice League Heroes - Platform: Sony PSP

Cheatmode:
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Press Start to pause game play. Then, hold L + R and press Down, Left, Up, 
Right to enable cheat mode. This will allow the other codes to be activated,
 as well as unlock all costumes.

Invincibility:
--------------
Press Start to pause game play. Then, hold L + R and press 
Left, Down, Right, Up, Left, Down, Right, Up.

Unlimited Superpower:
---------------------
Press Start to pause game play. Then, hold L + R and press 
Down(2), Right(2), Up(2), Left(2).

Maximum abilities:
------------------
Press Start to pause game play. Then, hold L + R and press 
Right, Down, Right, Down.

35 random boosts:
-----------------
Press Start to pause game play. Then, hold L + R and press 
Left, Right, Left, Right.

20 shields:
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Press Start to pause game play. Then, hold L + R and press 
Up(2), Down(2).

Bonus heroes:
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The following characters can be unlocked by spending the indicated 
amount of Justice League of America shields that can be collected 
during game play.

Aquaman                    : 27 shields
Green Arrow                : 76 shields
Green Lantern (Hal Jordan) : 84 shields
Green Lantern (Kyle Rayner): 55 shields
Hawkgirl                   : 70 shields
Huntress                   : 53 shields 

Alternate costumes:
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The following characters can be unlocked by spending the indicated 
amount of Justice League of America shields that can be collected 
during game play.

Batman (classic blue): 59 shields
Batman (Batman Beyond infiltration suit): 74 shields
Flash (Jay Garrick): 21 shields
Flash (Walter West): 48 shields
Green Lantern (retro): 23 shields
Green Lantern (bold): 30 shields
Martian Manhunter (modern): 29 shields
Martian Manhunter (true): 15 shields
Superman (black recovery suit): 32 shields
Superman (Earth 2): 65 shields
Superman (Kandor): 91 shields
Wonder Woman (biker): 61 shields
Wonder Woman (toga): 44 shields
Zatanna (classic blue): 25 shields
Zatanna (Identity Crisis): 38 shields 

Completion bonuses:
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Successfully complete the game to unlock the "Continued Play" option 
(to allow a new game to be started with all previous stats and items 
unlocked" and an alternate main menu background (with characters from 
the game).

Fast health recovery:
---------------------
Upgrade your health recover and the strongest weapon for the character 
you are currently using. For example, upgrade the Flash's Whirlwind 
ability or Wonder Woman's Tiara throwing ability with Damage and Duration 
boosts. All the characters lose health quickly to most any kind of attacks.
It is wise to have a fast recovery of health. Use the Speed Boosts in all 
the recovery slots.