Released in 2003, the games Ruby and Sapphire are part of the third generation. Ruby and Sapphire are set in a new region called Hoenn. Along with the new region, new Pokemon were also introduced. Also new to the game were double battles, abilities, and natures. Though the games are a little bit different than the earlier ones, they mostly share the same objectives: to defeat the Elite Four and to complete the Pokedex.
Disclaimer:
Drawing of Umbreon in banner from Suta-Raito.com. This is just a fansite. Pokemon is copyrighted to Nintendo. All content, however, was written by me, unless stated otherwise. Any Pokemon sprites used on this website are from pe2k.com