Strictly speaking, you cannot legally download a pre-assembled Sacred Gold ROM from most reputable community sites. This is due to copyright law. Nintendo owns the asset data for HeartGold . If a hacker distributed a complete file containing that data, they would be distributing Nintendo's property.
Pokémon Sacred Gold is a ROM hack that rebuilds the original Pokémon Gold game from the ground up. The game features updated graphics, new features, and a host of improvements that make it feel like a new game. The story remains largely the same, but with some welcome additions and tweaks. download pokemon sacred gold nds rom