Pokémon versions Gold, Silver, and Crystal were the second set of Pokémon games for the handheld systems. These games featured Pokémon 152-251, otherwise known as the Second Gen Pokémon. A couple of new features that these games had included the day and night system, new types of Pokéballs, in addition to a feature unique to these games: the ability to go back to a previous land, in this case, Kanto. Many of these features were used in Pokémon games to come.

System: Game Boy Color
Release Dates:
G&S: Nov. 21, 1999 C: Dec. 14, 2000
G&S: Oct. 15, 2000 C: July 30, 2001
G&S: Apr. 06, 2001 C: Oct. 31, 2001