Evolution

About 229 evolution lines are in the game, authored from Gen 1 to 5 canon and keyed by exact species name. An evolution can be triggered three ways: by level, by stone, or by a branch (a species that can become more than one thing). On evolve, the mon's species is overwritten by the new one.

Every evolution, all three ways, charges Dust and gold. At Common, creating a second form costs 100 Dust and 5,000 gold, and creating a third costs 400 Dust and 20,000 gold. The price rises with the rarity of the pokémon evolving, up to 1,500 Dust and 75,000 gold (second form) and 5,500 Dust and 275,000 gold (third) at Divine. The full table is in Releasing pokémon and Dust.

By level (the default)

Most mons become ready to evolve on their own upon reaching the target level, with no item needed. You click Evolve and pay the Dust and the gold. Some well-known milestones:

Line	Level
Caterpie → Metapod	7
Metapod → Butterfree	10
Magikarp → Gyarados	20
Beldum → Metang	20
Larvitar → Pupitar	30
Metang → Metagross	45
Bagon (line) → Salamence	50
Dragonair → Dragonite	55
Pupitar → Tyranitar	55

By stone

When an evolution uses a stone, the stone replaces the level gate: with the stone in hand, the mon evolves at any level. The stone is consumed in the process, and Dust and gold are charged on top of it. Level evolutions consume no item, only Dust and gold.

Some of the stones and their users:

Stone	Example users
Leaf Stone	Weepinbell → Victreebel, Roselia → Roserade, Eevee → Leafeon, Pansage → Simisage
Water Stone	Shellder → Cloyster, Staryu → Starmie, Panpour → Simipour
Thunder Stone	Pikachu → Raichu, Magneton → Magnezone, Eelektrik → Eelektross
Fire Stone	Vulpix → Ninetales, Growlithe → Arcanine, Pansear → Simisear
Sun Stone	Sunkern → Sunflora, Cottonee → Whimsicott, Petilil → Lilligant, Minccino → Cinccino
Metal Coat	Onix → Steelix, Scyther → Scizor
Reaper Cloth	Dusclops → Dusknoir, Lampent → Chandelure, Phantump → Trevenant, Pumpkaboo → Gourgeist
Moon Stone (the fairy stone)	Eevee → Sylveon, Clefairy → Clefable, Jigglypuff → Wigglytuff, Nidorina → Nidoqueen, Nidorino → Nidoking, Skitty → Delcatty, Munna → Musharna, Floette → Florges, Spritzee → Aromatisse, Swirlix → Slurpuff
Dragon Scale	Seadra → Kingdra
Up-Grade	Porygon → Porygon2, Porygon2 → Porygon-Z
Darkness Stone	Murkrow → Honchkrow, Sneasel → Weavile, Gligar → Gliscor, Misdreavus → Mismagius
Enigma Stone	Kirlia → Gallade
King's Rock (Heart Stone)	Slowpoke → Slowking, Poliwhirl → Politoed

Branching evolutions

Some species can become more than one thing. Here there are two very different categories.

You choose

You supply the target (the stone or the desired form):

Species	Level	Options
Eevee	25	Vaporeon (Water Stone), Jolteon (Thunder Stone), Flareon (Fire Stone), Espeon (psychic stone), Umbreon (dark stone), Leafeon (Leaf Stone), Glaceon (ice stone), Sylveon (Moon Stone)
Gloom	32	Vileplume (Leaf Stone), Bellossom (Sun Stone)
Poliwhirl	35	Poliwrath (Water Stone), Politoed (Heart Stone)
Slowpoke	37	Slowbro (level 37, no item), Slowking (Heart Stone)
Clamperl	30	Huntail (ice stone), Gorebyss (Prism Scale)
Kirlia	30	Gardevoir (level 30, no item), Gallade (psychic stone)

The individual decides (you can't choose)

Here the final form is decided by the mon itself, not by your choice:

Tyrogue at level 20, decided by Attack vs Defense (using trained stats, including IV/EV/nature):
- Attack > Defense → Hitmonlee
- Attack < Defense → Hitmonchan
- Attack = Defense → Hitmontop
Wurmple at level 7, fixed at birth: every Wurmple is already destined to become Silcoon or Cascoon. It's fixed and never changes.
Burmy at level 20, also fixed at birth: it becomes Wormadam or Mothim.

Baby forms

Seven Sinnoh species are the form that comes before a pokemon that already existed. They change nothing for anyone who already has the adult, but they become the base of that family, and the base is what decides the hatchling in breeding.

Baby	Becomes	Level
Budew	Roselia	15
Bonsly	Sudowoodo	15
Mime Jr.	Mr. Mime	15
Happiny	Chansey	15
Chingling	Chimecho	20
Munchlax	Snorlax	25
Mantyke	Mantine	25

Mega Evolution

26 species have a Mega form (Charizard has two: X and Y). The Mega form stays until you undo it (see below), and awakening takes three steps:

Mega Stone Fragment: drops from Epic (0.8%) and Legendary (2.4%) chests. Common and Rare chests never give fragments.
Forge at the Laboratory: fragments + gold + Dust become 1 Mega Stone.
Awaken: on the pokémon's screen (Mega Evolution section), consuming 1 Mega Stone plus more Dust. Species with two forms pick which one on click.

Mega charges Dust twice, on purpose: the Mega Stone is tradeable, so whoever buys a stone from another trainer pays at awakening time.

What each Mega Stone costs

Every Mega Stone costs the same, whether it is your first or your twentieth:

Fragments	Gold	Dust
15	300,000	10,000

The Laboratory shows the price before you forge. Holding a Mega Stone, or spending it on a pokémon, changes nothing: the price is always this one.

What awakening costs

Awakening is priced by the rarity of the pokémon doing it, like any evolution. It always costs well more than a third form: mega is the step above it.

Rarity	Dust
Common	3,500
Uncommon	5,000
Rare	6,500
Epic	10,000
Prismatic	14,000
Mythic	20,000
Astral	28,000
Divine	40,000

The pokémon's screen shows the number before you click.

A Mega form is a species of its own, with a dedicated sprite and stats. Mega forms also appear as raid bosses: awakening your own is the collection path.

The Mega form can't breed. While it is Mega, the Incubator refuses the pairing.

Undoing the Mega

On the same screen (Mega Evolution section), the Undo Mega button turns the pokémon back into its normal form. Charizard X and Charizard Y both go back to Charizard. What happens:

it can breed again;
moves, IVs, rarity, Bond, items and ability stay as they are;
the Mega Stone does not come back, and neither does the awakening Dust;
to go Mega again you need another Mega Stone and pay the awakening again.

The screen asks you to confirm first. Undoing costs 10% of the awakening for that rarity:

Rarity	Dust
Common	350
Uncommon	500
Rare	650
Epic	1,000
Prismatic	1,400
Mythic	2,000
Astral	2,800
Divine	4,000