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
Gogoat
#0673

Gogoat

grass
D
Pancham
#0674

Pancham

fighting
C
Pangoro
#0675

Pangoro

fightingdark
C
Furfrou
#0676

Furfrou

normal
D
Espurr
#0677

Espurr

psychic
C
Meowstic
#0678

Meowstic

psychic
C
Honedge
#0679

Honedge

steelghost
B
Doublade
#0680

Doublade

steelghost
B
Aegislash
#0681

Aegislash

steelghost
C
Spritzee
#0682

Spritzee

fairy
C
Aromatisse
#0683

Aromatisse

fairy
D
Swirlix
#0684

Swirlix

fairy
C
Slurpuff
#0685

Slurpuff

fairy
D
Inkay
#0686

Inkay

darkpsychic
C
Malamar
#0687

Malamar

darkpsychic
D
Binacle
#0688

Binacle

rockwater
C
Barbaracle
#0689

Barbaracle

rockwater
D
Skrelp
#0690

Skrelp

poisonwater
C
Dragalge
#0691

Dragalge

poisondragon
D
Clauncher
#0692

Clauncher

water
C
Clawitzer
#0693

Clawitzer

water
D
Helioptile
#0694

Helioptile

electricnormal
C
Heliolisk
#0695

Heliolisk

electricnormal
C
Tyrunt
#0696

Tyrunt

rockdragon
C
Tyrantrum
#0697

Tyrantrum

rockdragon
D
Amaura
#0698

Amaura

rockice
C
Aurorus
#0699

Aurorus

rockice
B
Sylveon
#0700

Sylveon

fairy
B
Hawlucha
#0701

Hawlucha

fightingflying
C
Dedenne
#0702

Dedenne

electricfairy
C
Carbink
#0703

Carbink

rockfairy
D
Goomy
#0704

Goomy

dragon
D
Sliggoo
#0705

Sliggoo

dragon
B
Goodra
#0706

Goodra

dragon
B
Klefki
#0707

Klefki

steelfairy
D
Phantump
#0708

Phantump

ghostgrass
C
Trevenant
#0709

Trevenant

ghostgrass
D
Pumpkaboo
#0710

Pumpkaboo

ghostgrass
C
Gourgeist
#0711

Gourgeist

ghostgrass
D
Bergmite
#0712

Bergmite

ice
C
Avalugg
#0713

Avalugg

ice
D
Noibat
#0714

Noibat

flyingdragon
C
Noivern
#0715

Noivern

flyingdragon
S
Xerneas
#0716

Xerneas

fairy
S
Yveltal
#0717

Yveltal

darkflying
B
Zygarde
#0718

Zygarde

dragonground
B
Diancie
#0719

Diancie

rockfairy
B
Hoopa
#0720

Hoopa

psychicghost
  • 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