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.

D
Sandygast
#0769

Sandygast

ghostground
C
Palossand
#0770

Palossand

ghostground
C
Pyukumuku
#0771

Pyukumuku

water
C
Type: Null
#0772

Type: Null

normal
C
Silvally
#0773

Silvally

normal
C
Minior
#0774

Minior

rockflying
C
Komala
#0775

Komala

normal
C
Turtonator
#0776

Turtonator

firedragon
C
Togedemaru
#0777

Togedemaru

electricsteel
A
Mimikyu
#0778

Mimikyu

ghostfairy
C
Bruxish
#0779

Bruxish

waterpsychic
C
Drampa
#0780

Drampa

normaldragon
B
Dhelmise
#0781

Dhelmise

ghostgrass
D
Jangmo-o
#0782

Jangmo-o

dragon
D
Hakamo-o
#0783

Hakamo-o

dragonfighting
B
Kommo-o
#0784

Kommo-o

dragonfighting
A
Tapu Koko
#0785

Tapu Koko

electricfairy
A
Tapu Lele
#0786

Tapu Lele

psychicfairy
B
Tapu Bulu
#0787

Tapu Bulu

grassfairy
A
Tapu Fini
#0788

Tapu Fini

waterfairy
D
Cosmog
#0789

Cosmog

psychic
C
Cosmoem
#0790

Cosmoem

psychic
S
Solgaleo
#0791

Solgaleo

psychicsteel
S
Lunala
#0792

Lunala

psychicghost
B
Nihilego
#0793

Nihilego

rockpoison
B
Buzzwole
#0794

Buzzwole

bugfighting
B
Pheromosa
#0795

Pheromosa

bugfighting
B
Xurkitree
#0796

Xurkitree

electric
B
Celesteela
#0797

Celesteela

steelflying
A
Kartana
#0798

Kartana

grasssteel
C
Guzzlord
#0799

Guzzlord

darkdragon
B
Necrozma
#0800

Necrozma

psychic
S
Magearna
#0801

Magearna

steelfairy
A
Marshadow
#0802

Marshadow

fightingghost
D
Poipole
#0803

Poipole

poison
B
Naganadel
#0804

Naganadel

poisondragon
A
Stakataka
#0805

Stakataka

rocksteel
B
Blacephalon
#0806

Blacephalon

fireghost
A
Zeraora
#0807

Zeraora

electric
  • 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