Let me know which one you meant, and I can point you to safe, legal guidance (like emulator setup or hack recommendations without linking copyrighted files).
If you want to play Pokémon HeartGold legitimately, here are legal options: pokemon heart gold gba rom
Following Pokémon, a toggleable Physical/Special split, and a full day/night system. Customization: Let me know which one you meant, and
GBA emulators are extremely lightweight and run smoothly on almost any mobile device or low-end PC. here are legal options: Following Pokémon
: Features "Exp. Share All," nature mints to reduce grinding, and the ability to use HMs without teaching them to your Pokémon. Pokémon HeartGold Generations