Halloween 2020

Halloween in 2020 would be the fifth Halloween event in Pokémon GO.

Features

 * Ghost-type Pokémon will be appearing more often in the wild, will be featured in raids, and will be hatching more frequently from Eggs.
 * This year, Gengar and Sableye will be wearing costumes! Face off with costumed Gengar in raids and keep an eye out for costumed Sableye in the wild—it may even hatch from an Egg!
 * Galarian Yamask will appear in Pokémon GO for the first time! Complete the new Halloween 2020 Special Research, A Spooky Message Unmasked, to help Professor Willow uncover the mysteries surrounding this Pokémon.
 * Spiritomb can be encountered by completing certain Field Research tasks and by completing the new Halloween 2020 Special Research story, A Spooky Message Unmasked. If you’re lucky, you may encounter a Shiny one!
 * Trainers who completed the Mega Buddy Challenge Timed Research will be able to participate in exclusive Timed Research that will reward Gengar Mega Energy.
 * Darkrai will be featured in five-star raids!
 * Enjoy Halloween-themed Field Research tasks!
 * New avatar items will be available in the Style Shop! Get dressed for Halloween with a Pikachu Mask, Gengar Onesie, Sableye Goggles, Sableye Mask, or Banette Mask! You can also try out the new Spooky Pose!
 * Keep those eyes peeled for the Creepy Crate, Boo Bundle, and Pumpkin Pack boxes in the shop!
 * Take a snapshot for some spooky surprises!

Timed Research
Trainers who completed Timed Research during Mega Buddy Challenge would access Halloween-themed Timed Research that would introduce Mega-Evolved Gengar.

Alolan Marowak Raid Day
On October, 2020, from 11:00 a.m. to 5:00 p.m. local time, Alolan Marowak will be appearing more often in raids.

Catch Mastery: Ghost Day
On October, 2020, from 8:00 a.m. to 10:00 p.m. local time, Ghost-type Pokémon will be appearing more often in the wild and there will be event-exclusive Timed Research available to complete.

Featured Pokémon
Selected Pokémon had increased spawn rates in the wild and from Incense or Lure Modules:

Trivia

 * This event was first mentioned in the blog about Mega September.