Pokémon: Ruby, Sapphire, and Emerald form the third generation of Pokémon, after Pokémon: Gold and Silver. Noticeable differences include the graphics and interface, Pokémon abilities, and running shoes that allow the player to move around much faster in the overworld before getting the bike.
Watch as drkspace runs through the fields and catches every single Pokémon as part of the Professor Oak Living Dex challenge, which involves catching every Pokémon and one of each evolutionary stage before each gym.