Pokémon Ruby and Sapphire are Generation 3 main-line Pokémon games in Hoenn. More to come...
Pokémon Ruby and Sapphire
Generation III, Hoenn, 2002

Explore Ruby and Sapphire
Ruby and Sapphire Pokédex
Every Pokémon available in this game
Locations
Every route, cave and town, with its wild Pokémon
TMs
Every TM, with each move's type, power, accuracy and PP
Gym Leaders & Elite Four
Every gym leader, the Elite Four and the Champion, with their teams
Shiny Rates
Shiny odds for every type of hunt
Catch Calculator
Probability of catching a Pokémon
Version Exclusives
Starters and Gifts
Starters
Officially the First Partner Pokémon, commonly called starters.