Home News Spark vs. Sierra: Who to Pick in Pokemon GO Holiday Part 1 Research?

Spark vs. Sierra: Who to Pick in Pokemon GO Holiday Part 1 Research?

by Sebastian Apr 25,2025

In *Pokemon GO*, players often face intriguing choices in branching research paths, and the Holiday Part 1 event is no exception. This time, you're tasked with deciding whether to assist Spark of Team Instinct or to pursue Sierra from Team GO Rocket. While Niantic's official announcement for the Holiday Part 1 event focuses on Field Research and a Paid Timed Research option, it's worth noting that there's also a free event research story available to all trainers. This research path, aptly named Holiday Part 1, kicks off on December 17 and wraps up on December 22 at 9:59 AM local time, offering three sections to complete.

After tackling the first set of tasks, you'll be faced with a pivotal decision: help Spark with his Pokemon Research or track down Sierra. So, which path should you take?

Pokemon GO Holiday Part 1 Branching Research Dates

The Holiday Part 1 event runs from December 17 to December 22 at 9:59 AM local time. Don't miss out on this window to participate in the free event research story!

Should You Pick Spark or Sierra in Pokemon GO Holiday Part 1 Event Research?

Choosing between Spark and Sierra isn't a decision to take lightly, but fortunately, the differences aren't drastic. Your choice will hinge on the type of Pokemon you prefer to catch and the specific reward encounter that appeals to you. Let's delve into what each option entails to help you make an informed decision.

Spark Research Tasks & Rewards

Pokemon GO Spark

Image via Niantic

Opting for Spark means your focus in Parts 2 and 3 will be on catching Ice-type Pokemon. Your reward for completing the second set of tasks will be an encounter with the Ice-type Alolan Vulpix. Here's what the tasks look like for this path:

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

Note that while the type of Pokemon you catch and power up in Part 3 varies depending on your choice, the rewards, including the Sandygast encounter, remain the same.

Sierra Research Tasks & Rewards

Pokemon GO Rocket Leaders

Image via Niantic

Choosing to pursue Sierra shifts your focus to the Fire-type aspect of this fire and ice-themed event. Your tasks will involve catching Fire-type Pokemon, and completing Part 2 will grant you an encounter with a Shadow Vulpix. Here are the tasks for the Sierra branch:

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

Ultimately, your decision between Spark and Sierra boils down to two key factors: which Vulpix encounter you desire and which type of Pokemon you want to focus on during the Holiday Part 1 event.

*Pokemon GO is available to play now*.