Location, Kanto
Viridian Forest: 25 species in 6 games
Red and Green (Japan)Red and BlueYellowFireRed and LeafGreenHeartGold and SoulSilverLet's Go, Pikachu and Eevee
25 species, 11 versions
| Species | Levels | Chance | Game page |
|---|---|---|---|
 Caterpie | 3 | 5% | All places |
 Metapod | 4 | 5% | All places |
 Weedle | 3 to 5 | 45% | All places |
 Kakuna | 4 to 6 | 40% | All places |
 Pikachu | 3 to 5 | 5% | All places |
| Species | Levels | Chance | Game page |
|---|---|---|---|
| Caterpie | 3 to 5 | 45% | All places |
| Metapod | 4 to 6 | 40% | All places |
| Weedle | 3 | 5% | All places |
| Kakuna | 4 | 5% | All places |
| Pikachu | 3 to 5 | 5% | All places |
| Species | Levels | Chance | Game page |
|---|---|---|---|
| Caterpie | 3 | 5% | All places |
| Metapod | 4 | 5% | All places |
| Weedle | 3 to 5 | 45% | All places |
| Kakuna | 4 to 6 | 40% | All places |
| Pikachu | 3 to 5 | 5% | All places |
| Species | Levels | Chance | Game page |
|---|---|---|---|
| Caterpie | 3 to 5 | 45% | All places |
| Metapod | 4 to 6 | 40% | All places |
| Weedle | 3 | 5% | All places |
| Kakuna | 4 | 5% | All places |
| Pikachu | 3 to 5 | 5% | All places |
| Species | Levels | Chance | Game page |
|---|---|---|---|
| Caterpie | 3 to 6 | 50% | All places |
| Metapod | 4 to 6 | 25% | All places |
 Pidgey | 4 to 8 | 24% | All places |
 Pidgeotto | 9 | 1% | All places |
| Species | Levels | Chance | Game page |
|---|---|---|---|
| Caterpie | 3 to 5 | 40% | All places |
| Metapod | 5 | 5% | All places |
| Weedle | 3 to 5 | 40% | All places |
| Kakuna | 4 to 6 | 10% | All places |
| Pikachu | 3 to 5 | 5% | All places |
| Species | Method | Levels | Chance | Game page |
|---|---|---|---|---|
| Caterpie | Walking in tall grass or a cave | 3 | up to 40% | All places |
| Metapod | Walking in tall grass or a cave | 3 to 5 | up to 30% | All places |
 Butterfree | Walking in tall grass or a cave | 7 | 10% | All places |
| Pidgey | Walking in tall grass or a cave | 3 to 7 | up to 10% | All places |
| Pidgeotto | Walking in tall grass or a cave | 7 | up to 9% | All places |
| Pikachu | Walking in tall grass or a cave | 4 to 7 | up to 5% | All places |
 Hoothoot | Headbutting trees | 3 to 7 | up to 55% | All places |
| Hoothoot | Walking in tall grass or a cave | 3 to 5 | up to 40% | All places |
 Noctowl | Headbutting trees | 5 to 7 | 5% | All places |
| Noctowl | Walking in tall grass or a cave | 7 | 15% | All places |
 Spinarak | Headbutting trees | 3 to 4 | 10% | All places |
 Ariados | Headbutting trees | 5 to 7 | 10% | All places |
 Seedot | Headbutting trees | 3 to 7 | up to 30% | All places |
 Shroomish | Headbutting trees | 3 to 7 | up to 5% | All places |
 Numel | Walking in tall grass or a cave | 5 | 20% | All places |
 Spoink | Walking in tall grass or a cave | 3 | 20% | All places |
 Kricketot | Walking in tall grass or a cave | 3 | 40% | All places |
 Budew | Walking in tall grass or a cave | 3 | 20% | All places |
 Carnivine | Walking in tall grass or a cave | 5 | 20% | All places |
| Species | Method | Levels | Chance | Game page |
|---|---|---|---|---|
| Weedle | Walking in tall grass or a cave | 3 | up to 40% | All places |
| Kakuna | Walking in tall grass or a cave | 3 to 5 | up to 30% | All places |
 Beedrill | Walking in tall grass or a cave | 7 | 10% | All places |
| Pidgey | Walking in tall grass or a cave | 3 to 7 | up to 10% | All places |
| Pidgeotto | Walking in tall grass or a cave | 7 | up to 9% | All places |
| Pikachu | Walking in tall grass or a cave | 4 to 7 | up to 5% | All places |
| Hoothoot | Headbutting trees | 3 to 7 | up to 55% | All places |
| Hoothoot | Walking in tall grass or a cave | 3 to 5 | up to 40% | All places |
| Noctowl | Headbutting trees | 5 to 7 | 5% | All places |
| Noctowl | Walking in tall grass or a cave | 7 | 15% | All places |
 Ledyba | Headbutting trees | 3 to 4 | 10% | All places |
 Ledian | Headbutting trees | 5 to 7 | 10% | All places |
| Seedot | Headbutting trees | 3 to 7 | up to 5% | All places |
| Shroomish | Headbutting trees | 3 to 7 | up to 30% | All places |
| Numel | Walking in tall grass or a cave | 5 | 20% | All places |
| Spoink | Walking in tall grass or a cave | 3 | 20% | All places |
| Kricketot | Walking in tall grass or a cave | 3 | 40% | All places |
| Budew | Walking in tall grass or a cave | 3 | 20% | All places |
| Carnivine | Walking in tall grass or a cave | 5 | 20% | All places |
| Species | Method | Levels | Chance | Game page |
|---|---|---|---|---|
 Bulbasaur | Rare spawn in grass with lure or catch combo | 3 to 6 | 100% | All places |
| Caterpie | Walking in the overworld | 3 to 6 | 100% | All places |
| Metapod | Walking in the overworld | 3 to 6 | 100% | All places |
| Butterfree | Walking in the overworld | 3 to 6 | 100% | All places |
| Weedle | Walking in the overworld | 3 to 6 | 100% | All places |
| Kakuna | Walking in the overworld | 3 to 6 | 100% | All places |
| Pidgey | Walking in the overworld | 3 to 6 | 100% | All places |
| Pikachu | Walking in the overworld | 3 to 6 | 100% | All places |
 Oddish | Walking in the overworld | 3 to 6 | 100% | All places |