List of methods of Evolution by index number in Generation I

This is a list of methods of Evolution by index number in Generation I.

Methods of Evolution

Index number	Method of Evolution	Used by
1	Level up with a minimum level (52 Evolutions)	#0001 → #0002 Bulbasaur Ivysaur Level 16	#0002 → #0003 Ivysaur Venusaur Level 32	#0004 → #0005 Charmander Charmeleon Level 16	#0005 → #0006 Charmeleon Charizard Level 36	#0007 → #0008 Squirtle Wartortle Level 16
		#0008 → #0009 Wartortle Blastoise Level 36	#0010 → #0011 Caterpie Metapod Level 7	#0011 → #0012 Metapod Butterfree Level 10	#0013 → #0014 Weedle Kakuna Level 7	#0014 → #0015 Kakuna Beedrill Level 10
		#0016 → #0017 Pidgey Pidgeotto Level 18	#0017 → #0018 Pidgeotto Pidgeot Level 36	#0019 → #0020 Rattata Raticate Level 20	#0021 → #0022 Spearow Fearow Level 20	#0023 → #0024 Ekans Arbok Level 22
		#0027 → #0028 Sandshrew Sandslash Level 22	#0029 → #0030 Nidoran♀ Nidorina Level 16	#0032 → #0033 Nidoran♂ Nidorino Level 16	#0041 → #0042 Zubat Golbat Level 22	#0043 → #0044 Oddish Gloom Level 21
		#0046 → #0047 Paras Parasect Level 24	#0048 → #0049 Venonat Venomoth Level 31	#0050 → #0051 Diglett Dugtrio Level 26	#0052 → #0053 Meowth Persian Level 28	#0054 → #0055 Psyduck Golduck Level 33
		#0056 → #0057 Mankey Primeape Level 28	#0060 → #0061 Poliwag Poliwhirl Level 25	#0063 → #0064 Abra Kadabra Level 16	#0066 → #0067 Machop Machoke Level 28	#0069 → #0070 Bellsprout Weepinbell Level 21
		#0072 → #0073 Tentacool Tentacruel Level 30	#0074 → #0075 Geodude Graveler Level 25	#0077 → #0078 Ponyta Rapidash Level 40	#0079 → #0080 Slowpoke Slowbro Level 37	#0081 → #0082 Magnemite Magneton Level 30
		#0084 → #0085 Doduo Dodrio Level 31	#0086 → #0087 Seel Dewgong Level 34	#0088 → #0089 Grimer Muk Level 38	#0092 → #0093 Gastly Haunter Level 25	#0096 → #0097 Drowzee Hypno Level 26
		#0098 → #0099 Krabby Kingler Level 28	#0100 → #0101 Voltorb Electrode Level 30	#0104 → #0105 Cubone Marowak Level 28	#0109 → #0110 Koffing Weezing Level 35	#0111 → #0112 Rhyhorn Rhydon Level 42
		#0116 → #0117 Horsea Seadra Level 32	#0118 → #0119 Goldeen Seaking Level 33	#0129 → #0130 Magikarp Gyarados Level 20	#0138 → #0139 Omanyte Omastar Level 40	#0140 → #0141 Kabuto Kabutops Level 40
		#0147 → #0148 Dratini Dragonair Level 30	#0148 → #0149 Dragonair Dragonite Level 55
2	Evolution stone (16 Evolutions)	#0025 → #0026 Pikachu Raichu Thunder Stone	#0030 → #0031 Nidorina Nidoqueen Moon Stone	#0033 → #0034 Nidorino Nidoking Moon Stone	#0035 → #0036 Clefairy Clefable Moon Stone	#0037 → #0038 Vulpix Ninetales Fire Stone
		#0039 → #0040 Jigglypuff Wigglytuff Moon Stone	#0044 → #0045 Gloom Vileplume Leaf Stone	#0058 → #0059 Growlithe Arcanine Fire Stone	#0061 → #0062 Poliwhirl Poliwrath Water Stone	#0070 → #0071 Weepinbell Victreebel Leaf Stone
		#0090 → #0091 Shellder Cloyster Water Stone	#0102 → #0103 Exeggcute Exeggutor Leaf Stone	#0120 → #0121 Staryu Starmie Water Stone	#0133 → #0134 Eevee Vaporeon Water Stone	#0133 → #0135 Eevee Jolteon Thunder Stone
		#0133 → #0136 Eevee Flareon Fire Stone
3	Trade (4 Evolutions)	#0064 → #0065 Kadabra Alakazam	#0067 → #0068 Machoke Machamp	#0075 → #0076 Graveler Golem	#0093 → #0094 Haunter Gengar

See also

Evolution Game mechanics Evolution prevention • Devolution • Evolution move Methods of Evolution Level-based Evolution • Evolution item (Evolution stone) • Trade Evolution • Friendship Evolution Time-based Evolution • Gender-based Evolution • Move-based Evolution Location-based Evolution • Region-based Evolution • Game-based Evolution Lists of Pokémon Evolutionary line (GO) • No evolutionary line • Branched • Cross-generation • Levels Methods of Evolution by index number (Gen I • Gen II • Gen III • Gen IV • Gen V • Gen VI • Gen VII • Gen VIII • Gen IX) In spin-off games Evolution in Mystery Dungeon (items) • Evolution in Pinball (items) Data structures Pokémon Evolution data structure (Gen III • Gen IV)

This game mechanic article is part of Project Games, a Bulbapedia project that aims to write comprehensive articles on the Pokémon games.