If you don't know, this is the link http://www.pokemoncrater.com/
, just login and pick a starter and start fighting and cacthing. Doesn't have all 386 pkm, put you can still catch many of Kanto, Johto and Hoenn pkm.
If you are a user of Pokemon Crater, what is your nick and team.
Mine is Tidus 24, and my team: