Mass Outbreaks are special encounters that can happen in Pokemon Legends: Arceus. Read on to learn how to find them and what kind of Pokemon will appear during those times!

Mass Outbreak Shiny Odds

About 26x Higher Than Standard Odds

Mass Outbreaks have greatly increased Shiny Odds, and are actually about twice as high as the rate for Massive Mass Outbreaks. Shiny farming through Mass Outbreaks is useful for when you want to farm for a specific Shiny Pokemon.

Conditions	Effect on Shiny Rate
Have a Pokemon Entry reach Research Level 10	1x the Shiny Rate for that Pokemon
Complete all of a Pokemon's Research Tasks	2x the Shiny Rate for that Pokemon
Having the Shiny Charm	3x the Shiny Rate for all Pokemon
Encountered during a Mass Outbreak	26x the standard Shiny Rate for that Pokemon
Encountered during a Massive Outbreak	13x the standard Shiny Rate for that Pokemon

The optimal rates for Shiny Pokemon require the Shiny Charm and all research tasks for that Pokemon completed for a Perfect page, and encounter the Pokemon through as Mass Outbreak.

Mass Outbreaks vs Massive Mass Outbreaks

While Mass Outbreaks have a higher shiny rate than Massive Mass Outbreaks, Massive Mass Outbreaks are generally more reliable for hunting shiny Pokemon.

Special Mass Outbreaks will cause a Mass Outbreak to spawn right after clearing the Mass Outbreak before it. The second spawn will also be the previous Pokemon's evolution at a higher level, and also has a chance to spawn as an outbreak of Alpha Pokemon.

The possibility of a second mass outbreak spawn in the same location makes shiny hunting more efficient, and it also makes hunting for Shiny Alpha Pokemon easier compared to waiting for them to spawn in their static encounters.

How to Hunt for Shiny Pokemon and Shiny Odds

List of Mass Outbreak Pokemon

We're still working on the full list of Mass Outbreak Pokemon. Check back again for more updates! Let us know what Mass Outbreaks you've found in the comments!

Pokemon that appear in Mass Outbreaks in Obsidian Fieldlands

Bidoof	Bibarel	Starly
Staravia	Staraptor	Shinx
Luxio	Luxray	Wurmple
Silcoon	Beautifly	Cascoon
Dustox	Ponyta	Eevee
Zubat	Golbat	Kricketot
Kricketune	Buizel	Floatzel
Stantler	Paras	Parasect
Pichu	Pikachu	Abra
Kadabra	Chimchar	Monferno
Buneary	Cherubi	Psyduck
Golduck	Combee	Scyther
Mime Jr.	Mr. Mime	Magikarp
Gyarados	Shellos	Gastrodon
Hisuian Qwilfish	Happiny	Chansey

Obsidian Fieldlands Map and Pokemon List

Pokemon that appear in Mass Outbreaks in Crimson Mirelands

Kricketot	Kricketune	Geodude
Graveler	Paras	Parasect
Psyduck	Golduck	Combee
Happiny	Chansey	Budew
Roselia	Carnivine	Petilil
Tangela	Tangrowth	Barboach
Whiscash	Croagunk	Toxicroak
Yanma	Yanmega	Hippopotas
Hippowdon	Pachirisu	Stunky
Skuntank	Teddiursa	Ursaring
Goomy	Hisuian Sliggoo	Rhyhorn
Rhydon	Bonsly	Sudowoodo
Lickitung	Lickilicky	Togepi
Turtwig	Grotle	Gastly
Haunter	Murkrow

Crimson Mirelands Map and Pokemon List

Pokemon that appear in Mass Outbreaks in Cobalt Coastlands

Starly	Staravia	Staraptor
Drifloon	Drifblim	Buizel
Floatzel	Aipom	Ambipom
Shellos	Gastrodon	Hisuian Qwilfish
Happiny	Chansey	Tangela
Tangrowth	Togepi	Spheal
Sealeo	Walrein	Remoraid
Octillery	Skorupi	Drapion
Hisuian Growlithe	Glameow	Purugly
Machop	Machoke	Chatot
Duskull	Dusclops	Piplup
Prinplup	Mantyke	Mantine
Basculin	Vulpix	Tentacool
Tentacruel	Finneon	Lumineon
Magby	Magmar

Cobalt Coastlands Map and Pokemon List

Pokemon that appear in Mass Outbreaks in Coronet Highlands

Shinx	Luxio	Luxray
Zubat	Golbat	Geodude
Graveler	Golem	Scyther
Heracross	Magikarp	Gyarados
Happiny	Chansey	Budew
Roselia	Croagunk	Toxicroak
Yanma	Yanmega	Hippopotas
Hippowdon	Stunky	Skuntank
Teddiursa	Ursaring	Goomy
Hisuian Sliggoo	Onix	Rhyhorn
Rhydon	Bonsly	Sudowoodo
Bronzor	Bronzong	Elekid
Electabuzz	Gligar	Gible
Gabite	Nosepass	Hisuian Voltorb
Rotom	Chingling	Chimecho
Misdreavus	Cleffa	Clefairy
Hisuian Sneasel

Coronet Highlands Map and Pokemon List

Pokemon that appear in Mass Outbreaks in Alabaster Icelands

Bidoof	Bibarel	Eevee
Drifloon	Drifblim	Stantler
Munchlax	Aipom	Ambipom
Happiny	Chansey	Ralts
Kirlia	Gardevoir	Lickitung
Gastly	Haunter	Machop
Machoke	Duskull	Dusclops
Basculin	Bronzor	Bronzong
Gligar	Gible	Gabite
Chingling	Chimecho	Misdreavus
Hisuian Sneasel	Snorunt	Glalie
Swinub	Piloswine	Mamoswine
Bergmite	Hisuian Avalugg	Snover
Abomasnow	Hisuian Zorua	Hisuian Zoroark
Rufflet	Hisuian Braviary	Riolu

Alabaster Icelands Map and Pokemon List

List of Pokemon that Do Not Appear in Mass Outbreaks

Starters, Legendary, and Space-Time DIstortion Pokemon

Starter Pokemon and their evolutions, as well as Legendary Pokemon will not appear in Mass Outbreaks.

Pokemon that only spawn in Space-Time Distortions will also not appear as Mass Outbreaks, and can only be obtained when the domes form.

Other Pokemon

Several Pokemon will also not appear in Mass Outbreaks, but can be obtained in the wild, as Alpha Pokemon, or by evolving them.

Pokemon that Do Not Appear in Mass Outbreaks
Crobat	Burmy	Wormadam	Mothim
Golem	Wyrdeer	Snorlax	Raichu
Alakazam	Infernape	Lopunny	Cherrim
Vespiquen	Kleavor	Overqwil	Blissey
Roserade	Hisuian Lilligant	Gallade	Ursaluna
Hisuian Goodra	Steelix	Rhyperior	Togetic
Togekiss	Torterra	Honchkrow	Unown
Hisuian Arcanine	Machamp	Dusknoir	Empoleon
Basculegion	Alolan Vulpix	Alolan Ninetales	Ninetales
Magnezone	Electivire	Gliscor	Garchomp
Probopass	Hisuian Electrode	Mismagius	Clefable
Sneasler	Froslass	Lucario

What are Mass Outbreaks?

A Large Number of a Certain Pokemon Appearing

Mass Outbreaks spawn tons of Pokemon within a specific area. They can happen anytime and anywhere on the map. However, only a certain Pokemon will come out on the outbreak.

Sometimes, even Alpha Pokemon show up in these Mass Outbreaks!

High chance of encountering Shiny Pokemon

You'll have a higher chance of encountering a Shiny Pokemon in the Mass Outbreak, as only one kind of Pokemon will appear. Use this chance to add more Shiny Pokemon to your collection!
How to Get Shiny Pokemon and Shiny Odds

How to Spawn Mass Outbreaks

Depart and Return to Jubilife Village Repeatedly

Chances for a Mass Outbreak occur each time you return to Jubilife Village. By going to a map, and returning to Jubilife Village, there is a chance you can trigger a Mass Outbreak in one of the areas.

The Pokemon that appear in the Mass Outbreak are random, but you can keep going back and forth until you get a Mass Outbreak of a Pokemon you want to look for.

Move between areas that don't already have Mass Outbreaks

Keep in mind that if a Mass Outbreak is already happening on the area you are moving to, there is a chance that area's Mass Outbreak won't change. It will be best to move between areas that don't currently have Mass Outbreaks.

Where to Find Mass Outbreaks

Check the Map on the Arc Phone

The Arc Phone will show you where a Mass Outbreak is on the map. It will also show what Pokemon is on the outbreak. It will be helpful to you, especially if you're looking for a specific Pokemon and a shiny version of it!

Chance of Finding a Massive Mass Outbreak

Massive Mass Outbreaks are simultaneous outbreaks that happen across the map. This is a new event brought about by the Daybreak Patch from Update 1.1.0!

Massive Mass Outbreaks Guide and List of Pokemon

Pokemon Legends: Arceus Related Guides

Beginner's Tips & Guides

Pokemon Legends: Arceus Tips and Guides