Pokémon HeartGold and SoulSilver

Pokémon HeartGold​ (ポケットモンスター ハートゴールド) and Pokémon SoulSilver (ポケットモンスター ソウルシルバー) are enhanced remakes of the 1999 video games Pokémon Gold and Pokémon Silver. The new titles are members of the series of role-playing games, and were developed by Game Freak and published by Nintendo for the Nintendo DS. They were released on September 12, 2009, in Japan, and were released on March 14, 2010 in North America, on March 25, 2010 in Australia, and on March 26, 2010 in Europe.

HeartGold and SoulSilver take place in the Johto region as in Pokémon Gold and Silver. After completing the main storyline, players can also go to the Kanto region, similarly to in the original Gold and Silver. Unlike the Pikachu in Pokémon Yellow, HeartGold and SoulSilver will allow any Pokémon the player owns to follow him or her in-game on the overworld. The player may talk to the Pokémon, and occasionally it may pick up certain secret items.