Pokémon HeartGold Generations : Which adds Pokémon from all 9 generations.

Identifies the group responsible for extracting the data from the retail cartridge and making it available for emulators and flashcarts. History and Controversy

Today, most players prefer "No-Intro" sets, which are verified clean dumps of games. However, if you are using the Xenophobia version:

There have been long-standing rumors in the community that this specific ROM is "shiny locked," meaning players cannot find rare Shiny Pokémon. However, players have since confirmed that Shiny Pokémon can be caught on this version, and any issues were likely due to the specific emulator used rather than the ROM itself. Is It Different from the Retail Game?

Sacred Gold & Storm Silver : Which increases difficulty and makes all 493 original Pokémon catchable. How to Use the Xenophobia ROM

Players using early emulators or unpatched flashcarts often experienced a permanent black screen after the title sequence or random game freezes during battles.

Use modern emulators like DeSmuME or MelonDS to ensure the built-in anti-piracy doesn't crash the game.