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Rock Tunnel

Location, Kanto

Rock Tunnel: 18 species in 8 games

Red and Green (Japan)Red and Blue Yellow Gold and Silver Crystal FireRed and LeafGreen HeartGold and SoulSilver Let's Go, Pikachu and Eevee

Area 1 of 3

Rock Tunnel (1F): 18 species across 9 versions

Gold and Silver: 5 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	8	10%	All places
Machop	12	20%	All places
Machoke	14	5%	All places
Geodude	10	30%	All places
Cubone	10 to 13	35%	All places

Crystal: 7 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	12 to 15	up to 40%	All places
Machop	12	up to 20%	All places
Machoke	15	up to 5%	All places
Geodude	11 to 12	up to 50%	All places
Haunter	17	10%	All places
Cubone	10	up to 30%	All places
Marowak	12	up to 5%	All places

FireRed and LeafGreen: 5 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	15 to 16	30%	All places
Mankey	16 to 17	15%	All places
Machop	16 to 17	15%	All places
Geodude	15 to 17	35%	All places
Onix	13 to 15	5%	All places

HeartGold and SoulSilver: 9 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	8	10%	All places
Machop	12	20%	All places
Machoke	14	5%	All places
Geodude	10	up to 20%	All places
Cubone	10 to 13	up to 25%	All places
Makuhita	12	20%	All places
Absol	10	20%	All places
Chingling	12	20%	All places
Bronzor	10	20%	All places

Let's Go, Pikachu and Eevee: 10 species
Species	Method	Levels	Chance	Game page
Charmander	Rare spawn in grass with lure or catch combo	18 to 23	100%	All places
Zubat	Walking in the overworld	18 to 23	100%	All places
Golbat	Walking in the overworld	18 to 23	100%	All places
Machop	Walking in the overworld	18 to 23	100%	All places
Geodude	Walking in the overworld	18 to 23	100%	All places
Graveler	Walking in the overworld	18 to 23	100%	All places
Onix	Walking in the overworld	18 to 23	100%	All places
Cubone	Walking in the overworld	18 to 23	100%	All places
Rhyhorn	Walking in the overworld	18 to 23	100%	All places
Kangaskhan	Walking in the overworld	18 to 23	100%	All places

Area 2 of 3

Rock Tunnel (B1F): 17 species across 14 versions

Red and Green (Japan): 4 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	15 to 18	55%	All places
Machop	15 to 17	15%	All places
Geodude	16 to 17	25%	All places
Onix	13 to 15	5%	All places

Red and Blue: 4 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	15 to 18	55%	All places
Machop	15 to 17	15%	All places
Geodude	16 to 17	25%	All places
Onix	13 to 15	5%	All places

Yellow: 3 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	15 to 21	50%	All places
Machop	17 to 21	10%	All places
Geodude	16 to 20	40%	All places

Gold and Silver: 6 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	10	10%	All places
Geodude	12	30%	All places
Onix	16	20%	All places
Cubone	12	30%	All places
Marowak	14	5%	All places
Kangaskhan	14	5%	All places

Crystal: 8 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	12 to 15	up to 40%	All places
Golbat	15	5%	All places
Geodude	14	up to 30%	All places
Haunter	15	5%	All places
Onix	16	up to 20%	All places
Cubone	12	up to 30%	All places
Marowak	15	up to 5%	All places
Kangaskhan	15	up to 5%	All places

FireRed and LeafGreen: 6 species
Species	Method	Levels	Chance	Game page
Zubat	Walking in tall grass or a cave	15 to 16	30%	All places
Mankey	Walking in tall grass or a cave	16 to 17	15%	All places
Machop	Walking in tall grass or a cave	17	10%	All places
Geodude	Smashing rocks	5 to 30	95%	All places
Geodude	Walking in tall grass or a cave	15 to 17	35%	All places
Graveler	Smashing rocks	25 to 40	5%	All places
Onix	Walking in tall grass or a cave	13 to 17	10%	All places

HeartGold and SoulSilver: 10 species
Species	Method	Levels	Chance	Game page
Zubat	Walking in tall grass or a cave	10	10%	All places
Geodude	Smashing rocks	12 to 21	100%	All places
Geodude	Walking in tall grass or a cave	12	up to 20%	All places
Onix	Walking in tall grass or a cave	16	20%	All places
Cubone	Walking in tall grass or a cave	12	up to 20%	All places
Marowak	Walking in tall grass or a cave	14	5%	All places
Kangaskhan	Walking in tall grass or a cave	14	5%	All places
Makuhita	Walking in tall grass or a cave	16	20%	All places
Absol	Walking in tall grass or a cave	12	20%	All places
Chingling	Walking in tall grass or a cave	16	20%	All places
Bronzor	Walking in tall grass or a cave	12	20%	All places

Let's Go, Pikachu and Eevee: 10 species
Species	Method	Levels	Chance	Game page
Charmander	Rare spawn in grass with lure or catch combo	18 to 23	100%	All places
Zubat	Walking in the overworld	18 to 23	100%	All places
Golbat	Walking in the overworld	18 to 23	100%	All places
Machop	Walking in the overworld	18 to 23	100%	All places
Geodude	Walking in the overworld	18 to 23	100%	All places
Graveler	Walking in the overworld	18 to 23	100%	All places
Onix	Walking in the overworld	18 to 23	100%	All places
Cubone	Walking in the overworld	18 to 23	100%	All places
Rhyhorn	Walking in the overworld	18 to 23	100%	All places
Kangaskhan	Walking in the overworld	18 to 23	100%	All places

Area 3 of 3

Rock Tunnel (B2F): 4 species across 5 versions

Red (Japan) and Green (Japan)Red and BlueYellow

Red and Green (Japan): 4 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	16 to 18	50%	All places
Machop	15 to 17	15%	All places
Geodude	16 to 18	26%	All places
Onix	13 to 17	9%	All places

Red and Blue: 4 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	16 to 18	50%	All places
Machop	15 to 17	15%	All places
Geodude	16 to 18	26%	All places
Onix	13 to 17	9%	All places

Yellow: 4 species, all by walking in tall grass or a cave
Species	Levels	Chance	Game page
Zubat	20 to 22	40%	All places
Machop	18 to 20	20%	All places
Geodude	17 to 21	30%	All places
Onix	14 to 22	10%	All places