Generation III

From the Pokémon Wiki, a database for the Pokémon series that anyone can contribute to

The third Generation of pokémon are numbered #252 - #386 in the PokeDex. The games which these Pokemon first appeared in are Pokemon Ruby and Sapphire.

Generation III can also be used to refer to the third Generation of Pokemon games which are called:

Game Boy Advance:

• Pokemon Ruby
• Pokemon Sapphire
• Pokemon FireRed
• Pokemon LeafGreen
• Pokemon Emerald

Game Cube:

• Pokemon XD
• Pokemon Colluseum
• Pokemon Channel
• Pokemon Snap
• Hey You, Pikachu!