Using cheat codes in Pokémon Black 2 can breathe new life into your journey through the Unova region. Whether you are looking to bypass the grind for EXP, secure an infinite supply of Master Balls, or simply explore the map with "Walk Through Walls," Action Replay (AR) codes remain the most reliable method. This guide provides a comprehensive breakdown of the most effective codes for the North American version of Pokémon Black 2, along with critical safety measures to protect your save file.

Before applying any codes, it is essential to verify your game version. The codes listed below are specifically tested for the US Version (Game ID: IREO-8E4C1CD6). Using these on Japanese (IREJ) or European (IRER) versions may lead to game crashes or save data corruption.

How to Safely Use Action Replay Codes

Stability is the primary concern when modifying game data. Even a single incorrectly entered digit can cause a "blue screen" or freeze the game. Follow these best practices to ensure your Unova adventure remains intact.

Backup Your Data

For those playing on physical Nintendo DS or 3DS hardware, manually save your game in a safe location (like inside a Pokémon Center) before activating the Action Replay hardware. If you are using an emulator such as DeSmuME, Delta, or DraStic, create a "Save State" or an external backup of your .sav file. This allows you to revert instantly if a code causes a glitch.

The One-at-a-Time Rule

Avoid the temptation to activate dozens of cheats simultaneously. Many AR codes modify the same memory addresses or conflict with the game's internal scripts. Activating a "Max Money" code at the same time as a "Wild Pokémon Modifier" is generally safe, but stacking multiple battle modifiers or movement cheats often results in a crash.

Button Triggers

Most high-quality Action Replay codes are not "always on." They require a button combination to trigger the effect. Common triggers include:

  • Select: Used for money and bag modifications.
  • L + R: Standard for item replacement codes.
  • Start + Select: Often used for complex event triggers.

Setting Up Cheats on Hardware and Emulators

The method for entering these hex strings varies depending on your platform.

Physical Nintendo DS Hardware

To use these on an actual console, you require a physical Action Replay cartridge.

  1. Insert the Action Replay into your DS, then insert your Pokémon Black 2 cartridge into the AR device.
  2. Boot the console and select "Add New Code" from the Action Replay menu.
  3. Manually enter the hex strings provided below. Double-check every character.
  4. Launch the game and use the specified button trigger to activate the cheat.

Using Emulators (DeSmuME, Delta, DraStic)

Emulators make the process significantly easier by allowing you to copy and paste codes.

  1. Open your emulator and load your Pokémon Black 2 ROM.
  2. Navigate to the Cheats menu (usually under "Tools" or "Cheat List").
  3. Select "Add New" and choose "Action Replay" as the code type.
  4. Paste the code, give it a clear description, and ensure it is checked/enabled.
  5. In some cases, you may need to reset the emulator or use the "Reset" command within the menu for the cheat to register.

Essential Pokémon Black 2 Action Replay Codes

The following hex codes are categorized by their function. Ensure you use the exact formatting provided.

Currency and Inventory Modifiers

Managing resources in Black 2 can be tedious. These codes ensure you never run out of funds or essential medicine.

Max Money (Press Select)

This code sets your wallet to the maximum 9,999,999 Poké Dollars.