It is important to clarify a technical distinction before providing an analysis of this topic.
Always download from trusted communities (e.g., PokeCommunity, Reddit r/Roms megathread) and scan files with antivirus software. Happy training pokemon heart gold gba rom
Many fans prefer the crisp, colorful pixel art of the GBA over the 3D-hybrid environments of the Nintendo DS. It is important to clarify a technical distinction
Some players find the dual-screen DS layout cluttered and prefer the classic single-screen GBA look. Fast-Forwarding: Some players find the dual-screen DS layout cluttered
(2009) were remakes of the original Gen 2 games, built on the Nintendo DS engine. The "GBA ROM" versions are community-driven efforts to port those features—such as following Pokémon, updated graphics, and Gen 4 mechanics—back to the 32-bit GBA architecture. Notable projects in this space include Pokémon Liquid Crystal Pokémon ShinyGold 2. Technical Implementation
Since an official GBA version doesn't exist, you'll want to look for these highly-rated ROM hacks that recreate the Johto experience: Pokemon Liquid Crystal