Instructions
Insert the Action Replay cartridge and choose the "Code Select" option on the home screen.
Select "Add New Game" and use the on-screen keyboard that appears to enter the name of the game. Press the "Next" button.
Enter the "Game Identifier" on the following page. For "Dragon Quest Monsters: Joker," this is "AJRE-5EEB7B5B" (without quotes). Press the "Next" button when you're done entering the game ID.
Select "Add New Code" from the menu that appears. Enter a simple name for the code, such as "Infinite HP." Press "Next" when you're done.
Enter the code on the following screen. "Dragon Quest Monsters: Joker" has three codes providing infinite HP.
The first gives you infinite HP and MP in the Battle Arena:
5222F498 E1D119B6
The second gives you infinite HP and MP in all other battles with other monsters:
5222F498 E1D119B6
The third gives you infinite HP, MP and super high tension, which allows you to deal increased damage to enemies:
5222F498 E1D119B6
You do not have to enter spaces or make new lines. The Action Replay will parse this information automatically.
Press the "Next" button. The codes are listed on the following screen.
Tap the check box next to the code to activate it. With the DS still on, remove the Action Replay cartridge and insert the "Dragon Quest Monsters: Joker" cartridge. Press the "Start" button on the screen to play the game.
0222F498 EAFA3B1E
020BE118 E59F0010
020BE11C E5810094
020BE120 E5810098
020BE124 E1C109BC
020BE128 E1D119B6
020BE12C EA05C4DA
020BE130 03E703E7
D2000000 00000000
0222F498 EAFA3B1E
D2000000 00000000
5222F498 EAFA3B1E
020BE118 E1D109B8
020BE11C E1C109B6
020BE120 E1D109BC
020BE124 E1C109BA
020BE128 E1D119B6
020BE12C EA05C4DA
D2000000 00000000
0222F498 EAFA3B1E
D2000000 00000000
5222F498 EAFA3B1E
020BE118 E1D109B8
020BE11C E1C109B6
020BE120 E1D109BC
020BE124 E1C109BA
020BE128 E3A00004
020BE12C E5C101F4
020BE130 E1D119B6
020BE134 EA05C4D8
D2000000 00000000