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
Venomoth
#0049

Venomoth

bugpoison
D
Diglett
#0050

Diglett

ground
C
Dugtrio
#0051

Dugtrio

ground
C
Meowth
#0052

Meowth

normal
C
Persian
#0053

Persian

normal
D
Psyduck
#0054

Psyduck

water
C
Golduck
#0055

Golduck

water
D
Mankey
#0056

Mankey

fighting
C
Primeape
#0057

Primeape

fighting
D
Growlithe
#0058

Growlithe

fire
C
Arcanine
#0059

Arcanine

fire
D
Poliwag
#0060

Poliwag

water
D
Poliwhirl
#0061

Poliwhirl

water
C
Poliwrath
#0062

Poliwrath

waterfighting
C
Abra
#0063

Abra

psychic
C
Kadabra
#0064

Kadabra

psychic
B
Alakazam
#0065

Alakazam

psychic
D
Machop
#0066

Machop

fighting
D
Machoke
#0067

Machoke

fighting
C
Machamp
#0068

Machamp

fighting
D
Bellsprout
#0069

Bellsprout

grasspoison
D
Weepinbell
#0070

Weepinbell

GrassPoison
C
Victreebel
#0071

Victreebel

grasspoison
D
Tentacool
#0072

Tentacool

waterpoison
B
Tentacruel
#0073

Tentacruel

waterpoison
C
Geodude
#0074

Geodude

rockground
C
Graveler
#0075

Graveler

RockGround
C
Golem
#0076

Golem

rockground
D
Ponyta
#0077

Ponyta

fire
C
Rapidash
#0078

Rapidash

fire
C
Slowpoke
#0079

Slowpoke

waterpsychic
C
Slowbro
#0080

Slowbro

waterpsychic
C
Magnemite
#0081

Magnemite

electricsteel
B
Magneton
#0082

Magneton

electricsteel
D
Farfetch'd
#0083

Farfetch'd

normalflying
D
Doduo
#0084

Doduo

normalflying
C
Dodrio
#0085

Dodrio

normalflying
D
Seel
#0086

Seel

water
C
Dewgong
#0087

Dewgong

waterice
D
Grimer
#0088

Grimer

poison
C
Muk
#0089

Muk

poison
D
Shellder
#0090

Shellder

water
B
Cloyster
#0091

Cloyster

waterice
C
Gastly
#0092

Gastly

ghostpoison
C
Haunter
#0093

Haunter

ghostpoison
B
Gengar
#0094

Gengar

ghostpoison
C
Onix
#0095

Onix

rockground
D
Drowzee
#0096

Drowzee

psychic
  • 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