Gastly is part of a three-member family.
- Gastly was released with the game launch on July 6th, 2016.
- Shiny form of Gastly was released after Gengar Special Raid Challenge on November 3rd, 2018.
|In wild since 2016 Jul 6
Increased spawns in:
Increased chance/Previously in:
Make 3 Great Throws: Since 2018 Apr
Catch 3 Gastly: July 2020 Community Day
Send 2 Gifts to Friends: 2019 Jan - Apr
Make a Nice Curveball throw: 2018 Jul
The Great Gastly - 1st part: Make 5 Nice Throws & Completing 1st part
Throwback Challenge 2020: Kanto - 4th part: Give your buddy a treat
|1,054||Obtainable during: |
July 2020 Community Day: Jul 19
- During the Halloween event in 2017, there were shiny forms of Gastly family members added to game data, although they weren't released to be caught in gameplay. 
- Shiny sprite of Gastly was updated on November 6th, 2018 after several complaints from the community.
- page, on the official Pokédex website
- article, on the Bulbapedia
- Gastly article, on the Pokémon Wiki