Niantic has announced the Pokémon GO Halloween festivities for 2021 which take place from Friday, October 15th, 2021, at 10:00 a.m. to Sunday, October 31st, 2021, at 8:00 p.m. local time. Continue to follow the Season of Mischief storyline focused on the Mythical Pokémon Hoopa!

YouTube Clip - Pokémon GO | Lavender Town Remix

Source: https://www.youtube.com/watch?v=32et8-tCU24

Pokémon GO Halloween brings Creepy Companions, Ghoulish Pals, and double the tricks and treats!

Trainers, Spooky shenanigans return during the Pokémon GO Halloween Mischief event! This time, there’ll be double the trouble and fun with a two-part event! Scroll on to learn more or use the navigation to jump to a specific part!

Pokémon GO Halloween Mischief

Friday, October 15, 2021, at 10:00 a.m. to Sunday, October 31, 2021, at 8:00 p.m. local time Available during the entire Event.

The Season of Mischief Story Continues!

Continue to follow the Season of Mischief storyline focused on the Mythical Pokémon Hoopa!

If you complete this Season’s Special Research story, you’ll gain access to a special event at the end of the Season that might have something to do with Hoopa!

A new part of the Season-long Special Research will unlock during each part of the Pokémon GO Halloween Mischief event. With more Psychic-, Ghost-, and Dark-type Pokémon appearing in the wild—along with new ones being discovered for the first time ever in Pokémon GO—this is the perfect opportunity to learn more about the Mischief Pokémon!

Halloween Cup Icon Halloween Cup

The Halloween Cup will be available in the GO Battle League! Check out the Season 9 GO Battle League blog for details on the cup’s rules.

Special and Timed Research

A Special Research story—What Lies beneath the Mask?—will be available!

Ghost-type Pokémon are appearing more often than usual, and Professor Willow has tasked you with learning more about them. Notably, Yamask has started appearing in the wild, prompting his interest in learning more about Ghost-type Pokémon related to masks. What can we learn about these Pokémon—and what can we learn about ourselves in the process?

Timed Research will be available with tasks focused on participating in the Halloween Cup in the GO Battle League.

Event Bonuses

Lavender Town Music
A remix of the iconic Lavender Town music will be playing nightly during the event. Turn up your in-game sound, and enjoy the spooky vibes!

You can also listen to the music by checking out this video. Get hyped for Pokémon GO Halloween Mischief!

Costumed Pokémon

More Costumed Pokémon will be available to encounter!


You can also encounter Halloween Mischief Drifblim in GO Battle League reward encounters.

New Avatar Items, Stickers, and Bundles

The following new avatar items will be available to purchase in the in-game shop starting on Thursday, October 14, 2021, at 1:00 p.m. PDT (GMT −7) and will continue to be available after the event ends!

• Pikachu Pumpkin Head
• Pumpkaboo Top
• Pumpkaboo Pants
• Hoopa Headband
• Halloween Face Sticker

You’ll be able to get Halloween-themed stickers by spinning PokéStops, opening Gifts, and purchasing them from the in-game shop.


Some spooky bundles will also be available for purchase in the shop throughout the event.

• Creepy Crate (480 PokéCoins): 50 Poké Balls, one Remote Raid Pass, two Super Incubators, four Incense
• Boo Bundle (1,480 PokéCoins): 16 Premium Raid Passes, eight Super Incubators, four Incense, four Star Pieces
• Pumpkin Pack (1,480 PokéCoins): 18 Super Incubators, two Incubators, four Incense, four Star Pieces

Halloween Mischief Part 1: Creepy Companions

Friday, October 15, 2021, at 10:00 a.m. to Friday, October 22, 2021, at 10:00 a.m. local time

The first part of Pokémon GO Halloween this year is themed around creepy companions: Psychic- and Poison-, type Pokémon that can’t wait to be encountered and befriended, as well as other friendly, creepy Pokémon. Galarian Slowking, the Hexpert Pokémon, will make its Pokémon GO debut, and Shiny Spinarak will be appearing for the first time in Pokémon GO, too!

Season of Mischief Special Research Story Unlock

The next part of the Season of Mischief Special Research story, Misunderstood Mischief, will unlock.

If you complete this Season’s Special Research story, you’ll gain access to a special event at the end of the Season that might have something to do with Hoopa!

Strange Pokémon are appearing in Pokémon GO, including Pokémon originally discovered in the Galar region like Galarian Slowking! Could this be a result of Hoopa’s rings? Let’s tackle this mystery together and learn more about Hoopa!

Galarian Slowking

Galarian Slowpoke will now be able to evolve into Galarian Slowking! To evolve it, set a Galarian Slowpoke as your buddy, and catch 30 Psychic-type Pokémon.*


* You’ll also be able to evolve Galarian Slowpoke into Galarian Slowking after the event ends.

Wild Encounters

The following Pokémon will be appearing more frequently in the wild. Also, for the first time in Pokémon GO, you’ll be able to encounter a Shiny Spinarak, if you’re lucky!


If you’re lucky, you may encounter a Shiny one!

Raids

The following Pokémon will be available to encounter in raids


If you’re lucky, you may encounter a Shiny one!

Eggs

Field Research Task Encounters

The following Pokémon will be available to encounter when you complete Field Research tasks.

Pokémon GO Halloween Part 2: Ghoulish Pals

Friday, October 22, 2021, at 10:00 a.m. to Sunday, October 31, 2021, at 8:00 p.m. local time

The second part of Pokémon GO Halloween Mischief is called Ghoulish Pals! Ghost types will be appearing more often everywhere as we get closer and closer to Halloween. The spectacularly spectral Pumpkaboo and Phantump will make their Pokémon GO debuts, alongside their Evolutions, Gourgeist and Trevenant! We’re also getting word that you’ll be able to encounter Pumpkaboo of varying sizes, just like you can in the Kalos region. Gourgeist evolved from Pumpkaboo will also vary in size! During this time, intrepid Trainers can complete a Collection Challenge that’ll encourage them to seek these Ghost-type Pokémon!

Season of Mischief Special Research Story Unlock

The next part of the Season of Mischief Special Research story, Misunderstood Mischief, will unlock.

If you complete this Season’s Special Research story, you’ll gain access to a special event at the end of the Season that might have something to do with Hoopa!

Professor Willow has a frightening but eye-opening encounter with some Phantump and Trevenant in a forest! This reminds him that Hoopa is also a Ghost-type Pokémon, so perhaps this is the perfect opportunity to do more research on the spooky, spectral Pokémon around us.

Pokémon Debuts

Phantump, Trevenant, Pumpkaboo, and Gourgeist make their debuts in Pokémon GO!

New Size Mechanic

With the introduction of Pumpkaboo comes a new mechanic to Pokémon GO: Pumpkaboo that are larger will actually look larger in the game!

Collection Challenge

In celebration of Pumpkaboo’s debut and the mechanic it introduces, a Collection Challenge will be available that requires you to collect Pumpkaboo of various sizes.

Wild Encounters

The following Pokémon will be available to encounter in the wild.

Raids

The following Pokémon will be available to challenge in raids. For the first time in Pokémon GO, Mega Absol will be available to challenge in Mega Raids!

Pokémon GO Halloween Mischief Special Raid Weekend

Saturday, October 30, 2021, at 10:00 a.m. to Sunday, October 31, 2021, at 8:00 p.m. local time

In celebration of Halloween weekend and the introduction of Mega Absol in Mega Raids, Mega Absol and Darkrai will appear more frequently in raids!

Eggs

The following Pokémon will be hatching from Eggs obtained during the event.

Event Field Research Task Encounters

The following Pokémon will be available to encounter when you complete Field Research tasks!


Face off against spooky Pokémon in raids, take part in Halloween-themed events like the Halloween Cup and a Special Raid Weekend, and pick up some new avatar items in the shop to dress your best for this year’s Pokémon GO Halloween Mischief!

Please be aware of your surroundings and follow guidelines from local health authorities when playing Pokémon GO. Upcoming events are subject to change.

Source: https://pokemongolive.com/post/halloween-2021