This year’s Pokemon Go Halloween event will take place from Friday, October 15, 2021, at 10:00 a.m. to Sunday, October 31, 2021, at 8:00 p.m. local time. It will be divided in two parts.

The following is available during the entire event:

• A new part of the Season-long Special Research will unlock during each part of the Pokémon GO Halloween Mischief event
• The Halloween Cup will be available in the GO Battle League
  • Pokémon must be at or below 1,500 CP to enter.
  • Only Poison-, Bug-, Ghost-, Dark-, and Fairy-type Pokémon are permitted.
• A Special Research story—What Lies beneath the Mask?—will be available, focusing on Ghost-type Pokemon
• Timed Research will be available with tasks focused on participating in the Halloween Cup in the GO Battle League.
• 2× Transfer Candy
• 2× Catch Candy
• 2× Hatch Candy
• Guaranteed Candy XL when walking with your buddy
• A remix of the iconic Lavender Town music will be playing nightly during the event
• Costumed Pokemon including Pikachu, Piplup and Drifblim

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

• New Halloween-themed stickers

• New item bundles for purchase
  • 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 next part of the Season of Mischief Special Research story, Misunderstood Mischief, will unlock
• 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.

• Ghost-type Pokemon in the wild, in Raids, in Eggs and in Field Research Task Encounters
• For the first time in Pokémon GO, you’ll be able to encounter a Shiny Spinarak, if you’re lucky!

Halloween Mishief 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 next part of the Season of Mischief Special Research story, Misunderstood Mischief, will unlock
• Phantump, Trevenant, Pumpkaboo, and Gourgeist make their debuts in Pokémon GO!
• With the introduction of Pumpkaboo comes a new mechanic to Pokémon GO: Pumpkaboo that are larger will actually look larger in the game!

• The next part of the Season of Mischief Special Research story, Misunderstood Mischief, will unlock
• Phantump, Trevenant, Pumpkaboo, and Gourgeist make their debuts in Pokémon GO!

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

• 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.
• Ghost-type Pokemon in the wild, in Raids, in Eggs and in Field Research Task Encounters
  • Mega Absol makes its Pokemon Go debut

• Special Raid Weekend
  • Saturday, October 30, 2021, at 10:00 a.m. to Sunday, October 31, 2021, at 8:00 p.m. local time
  • Mega Absol in Mega Raids, Mega Absol and Darkrai will appear more frequently in raids!