Route 32: 24 species in 3 games

Gold and Silver Crystal HeartGold and SoulSilver

Road 32: 24 species across 5 versions

Gold: 14 species
Species	Method	Levels	Chance	Game page
Rattata	Walking in tall grass or a cave	4 to 8	up to 40%	All places
Spearow	Headbutting a high encounter rate tree	10	50%	All places
Spearow	Headbutting a low encounter rate tree	10	80%	All places
Spearow	Headbutting a normal encounter rate tree	10	80%	All places
Zubat	Walking in tall grass or a cave	4 to 8	up to 5%	All places
Bellsprout	Walking in tall grass or a cave	6	up to 30%	All places
Tentacool	Fishing with a good rod	20	65%	All places
Tentacool	Fishing with an old rod	10	15%	All places
Tentacool	Fishing with a super rod	40	70%	All places
Tentacool	Surfing	15 to 19	60%	All places
Tentacruel	Surfing	20 to 24	10%	All places
Magikarp	Fishing with a good rod	20	35%	All places
Magikarp	Fishing with an old rod	5 to 10	up to 85%	All places
Magikarp	Fishing with a super rod	40	20%	All places
Mareep	Walking in tall grass or a cave	6	up to 20%	All places
Hoppip	Walking in tall grass or a cave	6	up to 10%	All places
Aipom	Headbutting a high encounter rate tree	10	20%	All places
Aipom	Headbutting a low encounter rate tree	10	20%	All places
Aipom	Headbutting a normal encounter rate tree	10	20%	All places
Wooper	Walking in tall grass or a cave	4 to 8	up to 35%	All places
Quagsire	Surfing	20 to 24	30%	All places
Qwilfish	Fishing with a good rod	20	65%	All places
Qwilfish	Fishing with an old rod	5	15%	All places
Qwilfish	Fishing with a super rod	40	up to 100%	All places
Heracross	Headbutting a high encounter rate tree	10	30%	All places

Silver: 15 species
Species	Method	Levels	Chance	Game page
Rattata	Walking in tall grass or a cave	6 to 8	up to 10%	All places
Spearow	Headbutting a high encounter rate tree	10	50%	All places
Spearow	Headbutting a low encounter rate tree	10	80%	All places
Spearow	Headbutting a normal encounter rate tree	10	80%	All places
Ekans	Walking in tall grass or a cave	4	up to 30%	All places
Zubat	Walking in tall grass or a cave	4 to 8	up to 5%	All places
Bellsprout	Walking in tall grass or a cave	6	up to 30%	All places
Tentacool	Fishing with a good rod	20	65%	All places
Tentacool	Fishing with an old rod	10	15%	All places
Tentacool	Fishing with a super rod	40	70%	All places
Tentacool	Surfing	15 to 19	60%	All places
Tentacruel	Surfing	20 to 24	10%	All places
Magikarp	Fishing with a good rod	20	35%	All places
Magikarp	Fishing with an old rod	5 to 10	up to 85%	All places
Magikarp	Fishing with a super rod	40	20%	All places
Mareep	Walking in tall grass or a cave	6	up to 20%	All places
Hoppip	Walking in tall grass or a cave	6	up to 10%	All places
Aipom	Headbutting a high encounter rate tree	10	20%	All places
Aipom	Headbutting a low encounter rate tree	10	20%	All places
Aipom	Headbutting a normal encounter rate tree	10	20%	All places
Wooper	Walking in tall grass or a cave	4 to 8	up to 35%	All places
Quagsire	Surfing	20 to 24	30%	All places
Qwilfish	Fishing with a good rod	20	65%	All places
Qwilfish	Fishing with an old rod	5	15%	All places
Qwilfish	Fishing with a super rod	40	110%	All places
Heracross	Headbutting a high encounter rate tree	10	30%	All places

Crystal: 16 species
Species	Method	Levels	Chance	Game page
Pidgey	Walking in tall grass or a cave	7	up to 5%	All places
Rattata	Walking in tall grass or a cave	5	up to 30%	All places
Ekans	Headbutting a low encounter rate tree	10	15%	All places
Ekans	Headbutting a normal encounter rate tree	10	15%	All places
Ekans	Walking in tall grass or a cave	4	up to 30%	All places
Zubat	Walking in tall grass or a cave	6	10%	All places
Bellsprout	Walking in tall grass or a cave	7	up to 20%	All places
Tentacool	Fishing with a good rod	20	65%	All places
Tentacool	Fishing with an old rod	10	15%	All places
Tentacool	Fishing with a super rod	40	70%	All places
Tentacool	Surfing	15 to 19	60%	All places
Tentacruel	Surfing	20 to 24	10%	All places
Gastly	Walking in tall grass or a cave	7	5%	All places
Exeggcute	Headbutting a high encounter rate tree	10	20%	All places
Exeggcute	Headbutting a low encounter rate tree	10	20%	All places
Exeggcute	Headbutting a normal encounter rate tree	10	20%	All places
Magikarp	Fishing with a good rod	20	35%	All places
Magikarp	Fishing with an old rod	5 to 10	up to 85%	All places
Magikarp	Fishing with a super rod	40	20%	All places
Hoothoot	Headbutting a high encounter rate tree	10	50%	All places
Hoothoot	Headbutting a low encounter rate tree	10	65%	All places
Hoothoot	Headbutting a normal encounter rate tree	10	65%	All places
Hoothoot	Walking in tall grass or a cave	7	5%	All places
Hoppip	Walking in tall grass or a cave	6 to 7	up to 15%	All places
Wooper	Walking in tall grass or a cave	4	30%	All places
Quagsire	Surfing	20 to 24	30%	All places
Pineco	Headbutting a high encounter rate tree	10	30%	All places
Qwilfish	Fishing with a good rod	20	65%	All places
Qwilfish	Fishing with an old rod	5	15%	All places
Qwilfish	Fishing with a super rod	40	up to 100%	All places

HeartGold: 18 species
Species	Method	Levels	Chance	Game page
Rattata	Walking in tall grass or a cave	4 to 6	up to 20%	All places
Zubat	Walking in tall grass or a cave	4	up to 5%	All places
Bellsprout	Walking in tall grass or a cave	6	up to 20%	All places
Tentacool	Fishing with a good rod	20	up to 30%	All places
Tentacool	Fishing with an old rod	10	15%	All places
Tentacool	Fishing with a super rod	40	70%	All places
Tentacool	Surfing	10 to 20	60%	All places
Tentacruel	Surfing	15 to 36	10%	All places
Exeggcute	Headbutting trees	4 to 7	up to 20%	All places
Magikarp	Fishing with a good rod	20	40%	All places
Magikarp	Fishing with an old rod	10	up to 70%	All places
Magikarp	Fishing with a super rod	40	20%	All places
Hoothoot	Headbutting trees	4 to 7	up to 80%	All places
Mareep	Walking in tall grass or a cave	6	up to 20%	All places
Hoppip	Walking in tall grass or a cave	6	up to 10%	All places
Wooper	Walking in tall grass or a cave	6	up to 25%	All places
Quagsire	Surfing	15 to 25	30%	All places
Pineco	Headbutting trees	4 to 5	30%	All places
Qwilfish	Fishing with a good rod	20	up to 65%	All places
Qwilfish	Fishing with an old rod	10	15%	All places
Qwilfish	Fishing with a super rod	40	up to 90%	All places
Linoone	Walking in tall grass or a cave	6	20%	All places
Whismur	Walking in tall grass or a cave	4 to 6	20%	All places
Bidoof	Walking in tall grass or a cave	6	20%	All places
Buizel	Walking in tall grass or a cave	4 to 6	20%	All places

SoulSilver: 19 species
Species	Method	Levels	Chance	Game page
Rattata	Walking in tall grass or a cave	4 to 6	up to 10%	All places
Ekans	Walking in tall grass or a cave	4	up to 20%	All places
Zubat	Walking in tall grass or a cave	4	up to 5%	All places
Bellsprout	Walking in tall grass or a cave	6	up to 20%	All places
Tentacool	Fishing with a good rod	20	up to 30%	All places
Tentacool	Fishing with an old rod	10	15%	All places
Tentacool	Fishing with a super rod	40	70%	All places
Tentacool	Surfing	10 to 20	60%	All places
Tentacruel	Surfing	15 to 36	10%	All places
Exeggcute	Headbutting trees	4 to 7	up to 20%	All places
Magikarp	Fishing with a good rod	20	40%	All places
Magikarp	Fishing with an old rod	10	up to 70%	All places
Magikarp	Fishing with a super rod	40	20%	All places
Hoothoot	Headbutting trees	4 to 7	up to 80%	All places
Mareep	Walking in tall grass or a cave	6	up to 20%	All places
Hoppip	Walking in tall grass or a cave	6	up to 10%	All places
Wooper	Walking in tall grass or a cave	6	up to 25%	All places
Quagsire	Surfing	15 to 25	30%	All places
Pineco	Headbutting trees	4 to 5	30%	All places
Qwilfish	Fishing with a good rod	20	up to 65%	All places
Qwilfish	Fishing with an old rod	10	15%	All places
Qwilfish	Fishing with a super rod	40	up to 90%	All places
Linoone	Walking in tall grass or a cave	6	20%	All places
Whismur	Walking in tall grass or a cave	4 to 6	20%	All places
Bidoof	Walking in tall grass or a cave	6	20%	All places
Buizel	Walking in tall grass or a cave	4 to 6	20%	All places