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.

C
Hypno
#0097

Hypno

psychic
C
Krabby
#0098

Krabby

water
C
Kingler
#0099

Kingler

water
D
Voltorb
#0100

Voltorb

electric
C
Electrode
#0101

Electrode

electric
D
Exeggcute
#0102

Exeggcute

grasspsychic
C
Exeggutor
#0103

Exeggutor

grasspsychic
D
Cubone
#0104

Cubone

ground
C
Marowak
#0105

Marowak

ground
B
Hitmonlee
#0106

Hitmonlee

fighting
C
Hitmonchan
#0107

Hitmonchan

fighting
D
Lickitung
#0108

Lickitung

normal
D
Koffing
#0109

Koffing

poison
C
Weezing
#0110

Weezing

poison
C
Rhyhorn
#0111

Rhyhorn

groundrock
C
Rhydon
#0112

Rhydon

groundrock
B
Chansey
#0113

Chansey

normal
C
Tangela
#0114

Tangela

grass
C
Kangaskhan
#0115

Kangaskhan

normal
D
Horsea
#0116

Horsea

water
C
Seadra
#0117

Seadra

water
D
Goldeen
#0118

Goldeen

water
C
Seaking
#0119

Seaking

water
D
Staryu
#0120

Staryu

water
B
Starmie
#0121

Starmie

waterpsychic
C
Mr. Mime
#0122

Mr. Mime

psychicfairy
C
Scyther
#0123

Scyther

bugflying
C
Jynx
#0124

Jynx

icepsychic
C
Electabuzz
#0125

Electabuzz

electric
C
Magmar
#0126

Magmar

fire
C
Pinsir
#0127

Pinsir

bug
C
Tauros
#0128

Tauros

normal
C
Magikarp
#0129

Magikarp

water
B
Gyarados
#0130

Gyarados

waterflying
C
Lapras
#0131

Lapras

waterice
D
Ditto
#0132

Ditto

normal
D
Eevee
#0133

Eevee

normal
C
Vaporeon
#0134

Vaporeon

water
C
Jolteon
#0135

Jolteon

electric
C
Flareon
#0136

Flareon

fire
C
Porygon
#0137

Porygon

normal
D
Omanyte
#0138

Omanyte

rockwater
C
Omastar
#0139

Omastar

rockwater
D
Kabuto
#0140

Kabuto

rockwater
C
Kabutops
#0141

Kabutops

rockwater
C
Aerodactyl
#0142

Aerodactyl

rockflying
B
Snorlax
#0143

Snorlax

normal
C
Articuno
#0144

Articuno

iceflying
  • 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