Modifying your classic Pokémon games comes with minor risks. Keep these safety tips in mind to protect your childhood save files:

If you are tech-savvy and own a modded 3DS, this is the definitive way to play HeartGold today. If you are looking for a simple "scan and play" experience on a stock console, this will not work for you.

The Nintendo DS and DSi did not have built-in QR code scanners or cameras meant for gameplay integration. HeartGold natively relies on local wireless, infrared (IR) via the game cartridge, and the defunct Nintendo Wi-Fi Connection.

In 2010, rare Pokémon like , Shiny Pichu (Spiky-Eared), and Mew were distributed via Nintendo Wi-Fi Connection (now defunct) or serial codes printed on physical event cards.

No QR code can be physically scanned by a retail cartridge of Pokémon Heart Gold on original hardware. If a code claims to work, it is a scam or requires jailbroken software.

Pokémon HeartGold and SoulSilver were released in 2009 for the Nintendo DS. QR code functionality was not introduced to the Pokémon franchise until Generation 7 with Pokémon Sun and Moon on the Nintendo 3DS.

: Force encounters with Celebi, Mew, or Arceus.

Choose . You will randomly receive classic 2010-era event distribution items and Pokémon! 3. Action Replay QR Codes for Mobile Emulators

Since the official Nintendo Wi-Fi Connection servers were shut down in 2014, standard wireless distribution is no longer available. However, the modern retro-gaming community has found ways to bypass these restrictions. If you want the items or Pokémon you thought a QR code would give you, here are your current options: The Custom DNS Exploit (No Mods Required)

The world of Pokémon QR codes and save editing opens up a side of the game that was once locked behind real-world events and time. It allows you to experience the complete Johto adventure on your own terms. As long as you take the time to learn the tools, back up your save files, and use your newfound power responsibly, you are in for a much richer and more personalized Pokémon HeartGold experience.