USUM expands the Alola Pokedex over Sun and Moon. More Pokemon are available earlier, new Ultra Beasts join the roster, and Ultra Warp Ride opens up legendaries from every past generation. The late game is harder too. Ultra Necrozma will sweep your team if you're not ready. Same Trial system, bigger Pokedex.

A
Zapdos
#0145

Zapdos

electricflying
B
Moltres
#0146

Moltres

fireflying
D
Dratini
#0147

Dratini

dragon
D
Dragonair
#0148

Dragonair

dragon
B
Dragonite
#0149

Dragonite

dragonflying
S
Mewtwo
#0150

Mewtwo

psychic
B
Mew
#0151

Mew

psychic
D
Chikorita
#0152

Chikorita

grass
D
Bayleef
#0153

Bayleef

grass
C
Meganium
#0154

Meganium

grass
D
Cyndaquil
#0155

Cyndaquil

fire
D
Quilava
#0156

Quilava

fire
C
Typhlosion
#0157

Typhlosion

fire
D
Totodile
#0158

Totodile

water
D
Croconaw
#0159

Croconaw

water
B
Feraligatr
#0160

Feraligatr

water
D
Sentret
#0161

Sentret

normal
C
Furret
#0162

Furret

normal
D
Hoothoot
#0163

Hoothoot

normalflying
C
Noctowl
#0164

Noctowl

normalflying
C
Ledyba
#0165

Ledyba

bugflying
C
Ledian
#0166

Ledian

bugflying
D
Spinarak
#0167

Spinarak

bugpoison
C
Ariados
#0168

Ariados

bugpoison
B
Crobat
#0169

Crobat

poisonflying
C
Chinchou
#0170

Chinchou

waterelectric
C
Lanturn
#0171

Lanturn

waterelectric
D
Pichu
#0172

Pichu

electric
D
Cleffa
#0173

Cleffa

fairy
C
Igglybuff
#0174

Igglybuff

normalfairy
D
Togepi
#0175

Togepi

fairy
C
Togetic
#0176

Togetic

fairyflying
D
Natu
#0177

Natu

psychicflying
C
Xatu
#0178

Xatu

psychicflying
D
Mareep
#0179

Mareep

electric
D
Flaaffy
#0180

Flaaffy

electric
C
Ampharos
#0181

Ampharos

electric
C
Bellossom
#0182

Bellossom

grass
D
Marill
#0183

Marill

waterfairy
C
Azumarill
#0184

Azumarill

waterfairy
C
Sudowoodo
#0185

Sudowoodo

rock
C
Politoed
#0186

Politoed

water
D
Hoppip
#0187

Hoppip

grassflying
D
Skiploom
#0188

Skiploom

grassflying
C
Jumpluff
#0189

Jumpluff

grassflying
D
Aipom
#0190

Aipom

normal
D
Sunkern
#0191

Sunkern

grass
C
Sunflora
#0192

Sunflora

grass
  • 807 total, five more than Sun and Moon. The new additions are Ultra Beasts: Poipole, Naganadel, Stakataka, Blacephalon, and Zeraora. The Alola dex is slightly expanded with more encounter options early.

  • The story diverges around the midpoint. Necrozma absorbs the box legendary to become Ultra Necrozma, one of the hardest boss fights in any Pokemon game. Ultra Warp Ride lets you catch legendaries from every past generation. New Ultra Beasts, more early encounters, and the Mantine Surf minigame are added.

  • Ultra Necrozma has 167 Sp. Atk, 97 Speed, and gets a stat-boosting aura on top of that. It will sweep most teams. Common strategies: Zoroark's Illusion to bait a Fighting-type move, Toxic stalling, or a Focus Sash Pokemon with a super effective hit. It's level 60 and the biggest difficulty spike in the series.

  • A minigame where you fly through Ultra Space on Solgaleo or Lunala. Different colored wormholes lead to different Pokemon. Legendary Pokemon from past generations (Mewtwo, Ho-Oh, Groudon, etc.) appear in the furthest wormholes. It's the main way to catch non-Alolan legendaries without transferring from older games.

  • Still Gen 7, 3DS, 2017. USUM is the enhanced take on Alola. Same Trial system, but the story diverges around the midpoint into Ultra Space content. More Pokemon available earlier, new Ultra Beasts, and a harder endgame stretch.

  • Same three starters as Sun and Moon. Litten's Incineroar is still the most practical for the story since Intimidate neuters Totem Pokemon. But team building matters more in USUM because Ultra Necrozma demands a specific answer on your squad.

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Pokemon Comparison