Home > News > Spark vs. Sierra: Best Choice in Pokemon GO Holiday Part 1 Research?

Spark vs. Sierra: Best Choice in Pokemon GO Holiday Part 1 Research?

Author:Kristen Update:Apr 28,2025

In Pokemon GO, players face a crucial decision during the Holiday Part 1 event's branching research path: whether to assist Spark from Team Instinct or pursue Sierra from Team GO Rocket. This event, running from December 17 to December 22 at 9:59 AM local time, introduces a free research story that Niantic's official announcement curiously omits, focusing instead on Field Research and Paid Timed Research.

The Holiday Part 1 event research splits into three segments. After completing the initial tasks, players must choose their path—either aiding Spark in his Pokemon research or tracking down Sierra. This choice significantly impacts the types of Pokemon you'll interact with and the rewards you'll receive.

Spark Research Tasks & Rewards

Pokemon GO Spark

Image via Niantic

Choosing Spark directs your focus towards Ice-type Pokemon. Completing Part 2 tasks grants you an encounter with the Ice-type Alolan Vulpix, along with other rewards.

Part 2

Research TaskReward
Catch 10 Ice-Type Pokemon10 Pinap Berries
Take 5 snapshots of different wild Pokemon20 Poke Balls
Complete 5 Field Research Tasks500 Stardust
Complete All Three TasksAlolan Vulpix encounter
2000 XP

Part 3

Research TaskReward
Catch 25 Ice-Type Pokemon10 Ultra Balls
Power Up Ice-Type Pokemon 10 Times1 Golden Razz Berry
Collect MP from 3 Power Spots100 Max Particles
Complete All Three TasksSandygast Encounter
3000 XP
2000 Stardust

Sierra Research Tasks & Rewards

Pokemon GO Rocket Leaders

Image via Niantic

Opting for Sierra shifts your attention to Fire-type Pokemon, culminating in a Part 2 reward encounter with a Shadow Vulpix.

Part 2

Research TaskReward
Catch 10 Fire-Type Pokemon10 Pinap Berries
Take 5 snapshots of different wild Pokemon20 Poke Balls
Complete 5 Field Research Tasks500 Stardust
Complete All Three TasksShadow Vulpix encounter
2000 XP

Part 3

Research TaskReward
Catch 25 Fire-Type Pokemon10 Ultra Balls
Power Up Fire-Type Pokemon 10 Times1 Golden Razz Berry
Collect MP from 3 Power Spots100 Max Particles
Complete All Three TasksSandygast Encounter
3000 XP
2000 Stardust

Your decision between Spark and Sierra hinges on two key elements: the type of Vulpix encounter you prefer and the Pokemon type you wish to focus on during the Holiday Part 1 event. Whether you choose the frosty allure of Ice-types with Spark or the fiery challenge of Fire-types with Sierra, both paths offer unique experiences and rewards tailored to your gameplay preferences.

Pokemon GO is available to play now.