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Should You Choose Spark or Sierra in the Pokemon GO Holiday Part 1 Research?

By LeoMar 18,2025

The Pokémon GO Holiday Part 1 event presents trainers with a branching research path, requiring a choice between assisting Spark or Sierra. While official Niantic announcements omitted details on this free research, available from December 17th to December 22nd at 9:59 AM local time, it's a crucial part of the event's three-section research story. After the initial tasks, players must decide: Team Instinct's Spark or Team GO Rocket's Sierra?

The choice isn't drastically impactful; it primarily affects the Pokémon you'll catch and your reward encounter. Let's examine each option:

Should You Choose Spark or Sierra in Pokémon GO's Holiday Part 1 Event Research?

Spark Research Tasks & Rewards

Pokemon GO Spark
Image via Niantic

Choosing Spark focuses your efforts on Ice-type Pokémon. Completing Part 2 rewards you with an Alolan Vulpix encounter.

Part 2

Research TaskReward
Catch 10 Ice-Type Pokémon10 Pinap Berries
Take 5 snapshots of different wild Pokémon20 Poké Balls
Complete 5 Field Research Tasks500 Stardust
Complete All Three TasksAlolan Vulpix encounter, 2000 XP

Part 3

Research TaskReward
Catch 25 Ice-Type Pokémon10 Ultra Balls
Power Up Ice-Type Pokémon 10 Times1 Golden Razz Berry
Collect MP from 3 Power Spots100 Max Particles
Complete All Three TasksSandygast encounter, 3000 XP, 2000 Stardust

Note: Part 3 rewards, including the Sandygast encounter, are consistent regardless of your choice between Spark and Sierra.

Sierra Research Tasks & Rewards

Pokemon GO Rocket Leaders
Image via Niantic

Selecting Sierra shifts the focus to Fire-type Pokémon, with a Shadow Vulpix encounter as the Part 2 reward.

Part 2

Research TaskReward
Catch 10 Fire-Type Pokémon10 Pinap Berries
Take 5 snapshots of different wild Pokémon20 Poké Balls
Complete 5 Field Research Tasks500 Stardust
Complete All Three TasksShadow Vulpix encounter, 2000 XP

Part 3

Research TaskReward
Catch 25 Fire-Type Pokémon10 Ultra Balls
Power Up Fire-Type Pokémon 10 Times1 Golden Razz Berry
Collect MP from 3 Power Spots100 Max Particles
Complete All Three TasksSandygast encounter, 3000 XP, 2000 Stardust

Your decision hinges on your preferred Vulpix variant and the Pokémon type you wish to prioritize catching during the Holiday Part 1 event.

Pokémon GO is available now.

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