Pokémon Gold and Silver beta
Pokémon Gold and Pokémon Silver (Japanese: ポケットモンスター 金・銀 Pocket Monsters Gold and Silver) were the first Generation II games to be released — November 21, 1999 in Japan and October 11, 2000 in the US. A sister game, Pokémon Crystal was released later, featuring some gameplay advances. This guide will show you the development process of these two great games.
Pokémon Gold & Silver - Development Reconstruction
1997: Introducing Pocket Monsters 2 Gold & Silver
http://bulbapedia.bulbagarden.net/wiki/Pokemon_Gold/Silver_Beta1.1
1998: The 2 is dropped - Pokémon Gold & Silver
http://archives.bulbagarden.net/wiki/Pokemon_Gold/Silver_Beta1.2
1999 - New information and forming of the final game (Part I)
http://archives.bulbagarden.net/wiki/Pokemon_Gold/Silver_Beta1.3
1999 - New information and forming of the final game (Part II)
Present Day: Beta Leftovers
The Future: What's missing here?
Resources for article:
Different archived versions of Nintendo of Japan's and IGN's GameBoy website.
Pokémon, Pokémon Gold and Silver, Nintendo, GameBoy and other trademarks used on this page are property of Nintendo Co. Ltd. and/or other respective companies.