Halloween 2017

Halloween in 2017 is the second Halloween event in Pokémon GO.

Featured Pokémon
Five select Ghost-type Pokémon from the Hoenn region were released: Sableye, Shuppet, Banette, Duskull, and Dusclops.

There was also Pikachu family members wearing a witch hat, temporally available to obtain through catching in wild (Pikachu and Raichu), hatching from eggs (Pichu) and evolution from one to another.

Following Pokémon had increased spawn rate in the wild:

Moreover, these Shiny Pokémon were released.

Additionally, there was possibility to hatch Pichu wearing witch hat from 2-km Eggs.

Avatar items
These avatar items were made available at the start of the event.

Shop special offer
Special boxes, featuring items such as Raid Passes and Super Incubators, were available from the in-game shop.

Promotional pictures
Following promotional pictures were published by creators of the game across their social media channels.

Trivia

 * During the Halloween event of 2017, there were several Shiny Pokémon released in parts:
 * On October, 2017 - Shiny Sableye began appearing on the first day of the Halloween event of 2017.
 * On October, 2017 - Shiny Duskull and Dusclops began appearing on the seventh day of the event.
 * On October, 2017 - Shiny Shuppet and Banette began appearing on the twelfth day of the event.
 * During this event, there were shiny forms of Gastly family members added to game data, although they weren't released to be caught in gameplay.
 * Shiny variants of family members of both Gastly and Misdreavus families were highly anticipated by players to appear during Halloween event in 2017 and later 2018, however neither of these Pokémon's shiny form were released then.
 * However, shiny variants of Gastly and its evolved forms were released on Gengar Day, and shiny forms of Misdreavus and Mismagius got released on December, 2018 with new Field Research for that month.