This site has simple information about the first 3 Pokémon generations. Each one has a new region and starter Pokémon.
| Generation | Region | New Pokémon | Starter Pokémon | Starter Types | Learn More |
|---|---|---|---|---|---|
| Gen I | Kanto | 151 | Bulbasaur, Charmander, Squirtle | Grass, Fire, Water | View Gen I |
| Gen II | Johto | 100 | Chikorita, Cyndaquil, Totodile | Grass, Fire, Water | View Gen II |
| Gen III | Hoenn | 135 | Treecko, Torchic, Mudkip | Grass, Fire, Water | View Gen III |