The DS's bottom screen was fully utilized for an improved menu and battle interface. Why It Still Holds Up
Professionally restored versions or "unlocked" copies containing all 493 Pokémon are available at sites like Retro vGames. Pokemon – HeartGold
Taking a cue from Pokémon Yellow , the first Pokémon in your party follows you behind your sprite in the overworld, allowing for unique interactions. The DS's bottom screen was fully utilized for