Like every new Pokemon Generation, almost all of the Pokemon in The Galar Region can evolve. For those that can evolve, a majority of them do so simply by hitting a certain Level. There are a few 8th Generation Pokemon that can only evolve when given a specific item, and even one that must know a certain move when leveling up and another that can only evolve with maximum Happiness at night.
Evolution Methods For All 8th Generation Pokemon
Grookey -> Thwackey: Level 16
Thwackey -> Rillaboom: Level 36
Scorbunny -> Raboot: Level 16
Raboot -> Cinderace: Level 36
Sobble -> Drizzile: Level 16
Drizzile -> Inteleon: level 36
Skwovet -> Greedent: Level 24
Rookiedee -> Corvisquire: Level 18
Corvisquire -> Corviknight: Level 38
Blipbug -> Dottler: Level 10
Dottler -> Orbeetle: Level 30
Nicket -> Thievul: Level 18
Gossifleur -> Eldegoss: Level 20
Wooloo -> Dubwool: Level 24
Chewtle -> Drednaw: Level 22
Yamper -> Bolthund: Level 25
Rolycoly -> Carkoal: Level 18
Carkoal -> Coalossal: Level 34
Applin -> Flapple: Give Tart Apple
Applin -> Appletun: Give Sweet Apple
Silicobra -> Sandaconda: Level 36
Cramorant (Does Not Evolve)
Arrokuda -> Barraskewda: Level 26
Toxel -> Toxtricity: Level 30
Sizzlipede -> Centiskorch: Level 28
Clobbopus -> Grapploct: Level Up Knowing Taunt
Sinistea -> Polteageist: Give Chipped/Cracked Pot
Hattena -> Hattrem: Level 32
Hattrem -> Hatterene: Level 42
Impidimp -> Morgrem: Level 32
Morgrem -> Grimmsnarl: Level 42
Milcery -> Alcremie: Give Sweet Item & Spin Control Stick
Falinks (Does Not Evolve)
Pinchurchin (Does Not Evolve)
Snom -> Forsmoth: Leve Up With Max Happiness At Night
Stonjourner (Does Not Evolve)
Eisue (Does Not Evolve)
Ideedee (Does Not Evolve)
Morpeko (Does Not Evolve)
Cufant -> Copperajah: Level 34
Dracozolt (Does Not Evolve)
Arctozolt (Does Not Evolve)
Dracovish (Does Not Evolve)
Arctovish (Does Not Evolve)
Duraludon (Does Not Evolve)
Dreepy -> Drakloak: Level 50
Drakloak -> Dragapult: Level 60
Now that you know how to evolve all the New Galar Region Pokemon, Click Here to learn how to evolve certain Galarian Form Pokemon!
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