Pokemon GO’s Halloween 2025 Part 1 event has begun, kicking off in-game spooky celebrations. This event shines the spotlight on numerous Dark and Ghost Types Pokemnon, with some even making their in-game debut. Alongside these Pokemon, both Sinistea and Polteageist will be available as shinies for the very first time, letting players finally get their hands on them.
If you’re wondering how you can get shiny Sinistea and shiny Polteageist in Pokemon GO, all relevant information has been included in the guide below.
How to Get Shiny Sinistea & Shiny Polteageist in Pokemon GO
In Pokemon GO, the Halloween 2025 Part 1 event began on October 21, 2025 at 10 AM local time, and will end on October 27, 2025 at 10 AM local time. Sinistea in general has also been featured during this event, so it provides a good opportunity to kick off your hunt.
How to Get Shiny Sinistea in Pokemon GO
In Pokemon GO, Sinistea has generally been available in limited situations, such as a former 1-Star Raid Boss, or as a reward from completing Field Research Tasks & Collection Challenges. This means that Sinistea is most likely to be obtained when it is featured as part of a themed event or in-game celebration.
The most recent of these events is none other than the one in which Sinistea’s shiny form debuts, Halloween 2025 Part 1. During this event, Sinistea is available as a rare wild spawn, meaning players may be able to find it in the wild.
Additionally, Sinistea is featured as a 1-Star Raid boss during these events, too, so the best way to acquire one or more of the Ghost Type is by simply exploring as many areas as possible to maximize your chances for both instances.
How to Get Shiny Polteageist in Pokemon GO
To get a shiny Polteageist in Pokemon GO, you will need to first acquire a shiny Sinistea and then evolve it. To evolve shiny Sinistea into shiny Polteageist, you will need to collect 50 Sinistea Candy. This can be done most easily by farming multiple captures of Sinistea and then also transferring additional copies of the Pokemon.
Halloween 2025 Part 1 is a great opportunity for farming the required Candy, not only because it offers two ways to encounter Sinistea, but also because one of the various event bonuses offers double Catch Candy, helping you to accumulate the 50 Sinistea Candy quicker than normal.