If your search includes the word , you are likely looking for Drayano’s massive overhaul: Sacred Gold & Storm Silver 2.0 (often referred to as SGSS 2.0).

At its core, Pokémon Sacred Gold is a complete overhaul of Pokémon HeartGold. It does not change the core story of a young trainer traveling through Johto and Kanto to defeat Gym Leaders and stop Team Rocket. Instead, it focuses on enhancing every single mechanic to create a deeper, more challenging, and vastly more rewarding gameplay experience.