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How to Get Shiny Archen in Pokémon GO: Catch Mastery Event Details

Catch Mastery: Archen offered boosted Shiny Archen chances through research encounters, but the Pokémon GO event ended on March 16, 2025.
WorldPokémon GO: Catch Mastery Event Details Length1 min Posted Quest giverVGSources Team
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You could boost your chance of finding Shiny Archen during Pokémon GO’s Catch Mastery: Archen event by completing its research encounters. The event ran on March 16, 2025, and has ended, so its event research and paid offer are no longer available.

How players could encounter Shiny Archen during Catch Mastery

Catch Mastery: Archen took place on Sunday, March 16, 2025, from 10:00 a.m. to 8:00 p.m. local time. During the event, Field Research tasks focused on Poké Ball throwing accuracy could lead to Archen encounters. Event Timed Research focused on catching Rock-type Pokémon.

According to the Pokémon GO event announcement, completing 10 sets of event Timed Research offered 40 Archen encounters and an increased chance of encountering Shiny Archen.

Paid Timed Research

A separate paid Timed Research offer provided 40 additional Archen encounters. Its tasks had to be completed and rewards claimed by 8:00 p.m. local time on March 16, 2025. Those 40 encounters were additional opportunities to find Archen, not a guarantee of a shiny.

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Did the event publish Shiny Archen odds?

No numerical Shiny Archen rate was given in the official announcement. It described the shiny chance as increased, but that wording does not establish a specific probability. The 40 encounters from each research option were encounter counts, not shiny odds.

Can you still get Shiny Archen through this event?

No. Catch Mastery: Archen ended at 8:00 p.m. local time on March 16, 2025, and its event research and paid Timed Research offer have expired. The event announcement does not establish whether Archen is currently available through other Pokémon GO encounters. Check current official Pokémon GO announcements for any present-day availability.

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  • Press and hold the central button on the Pokémon GO Plus + accessory and place it by your pillow to track your rest rhythm on the Pokémon Sleep app
  • There’s a Pikachu within your Pokémon GO Plus + that can sing you lullabies and act as your morning alarm; Pikachu grows friendlier the more you sleep, unlocking even more sounds!
  • Spin PokéStops or throw Poké Balls automatically in Pokémon GO for hands-free gameplay (and Great Balls and Ultra Balls can be thrown too!)
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Other Catch Mastery event bonuses

The event also increased the chance of encountering Shiny Omanyte and Shiny Kabuto. Successful catches with Nice Throws or better earned 2× XP, as did successful Curveball catches.

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  • Keep track of your sleep with the press of a button
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  • There’s a Pikachu within your Pokémon GO Plus + that can sing you lullabies and act as your morning alarm; Pikachu grows friendlier the more you sleep, unlocking even more sounds!
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  • Press and hold the central button on the Pokémon GO Plus + accessory and place it by your pillow to track your rest rhythm on the Pokémon Sleep app
  • There’s a Pikachu within your Pokémon GO Plus + that can sing you lullabies and act as your morning alarm; Pikachu grows friendlier the more you sleep, unlocking even more sounds!
  • Spin PokéStops or throw Poké Balls automatically in Pokémon GO for hands-free gameplay (and Great Balls and Ultra Balls can be thrown too!)

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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