: Originally, the physical game came bundled with the Pokéwalker, a pedometer that allowed players to transfer a Pokémon to it and level it up by walking in real life.

Take a look at why this game is considered a masterpiece and a fan favorite by many trainers: Pokemon Heart Gold Guide - Part 1 - Back to the Past YouTube• 29 Mar 2013 Key Features

You can find various listings for the game on platforms like eBay or Amazon for those looking to add it to their collection. Pokemon Heart Gold Guide - Part 1 - Back to the Past