How to Achieve Blue Skin in Heartopia Through Completing and Solving

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As Heartopia welcomes the cold weather in the early months of the year, there are a few important things to keep in mind to enjoy the season. One key concern is Frostspore Infection, which players will learn about from introductory quests leading up to the event.

However, there is some confusion about how to catch or prevent Frostspore Infection from affecting your character in Heartopia. We’ll clarify everything you need to know about this mysterious illness and how you can unlock a new blue skin for your adorable avatar.

Updated February 17, 2026, by Zoë J. Osik: We’ve added the latest Frostspore collectibles from the Birdwatching and Butterfly events. Be sure to collect them before they disappear!

What Is Frostspore Infection?

Frostspore Infection is a disease that becomes active during winter in Heartopia. You’ll learn about it from characters like Annie and others around town. It causes some unique effects to the island’s animals and environment.

One notable effect is that your avatar’s skin turns blue! This means that if you catch a cold during the winter season, you can unlock a new skin color variation by experiencing Frostspore Infection. But how do you intentionally trigger this?

Updated February 9, 2026, by Zoë J. Osik: We’ve added locations for the new Frostspore insects and winter birds, so you can complete your collections!

How to Unlock Blue Skin

It doesn’t depend on how long you stay outside in the cold. Instead, you need to consistently trigger the Frostspore Infection buff during the Frostwave Event Season. To do this, you must:

• Get the snowflake buff six times by touching the snowman on top of the igloo.

Once you’ve turned into a snowman six times and triggered the Frostspore Infection buff, you’ll unlock the Ice Crystal Skin, matching the winter theme and available alongside seasonal items from the Acorn Store.

Note: Interacting with the snowman has a 10-minute cooldown, so plan your actions accordingly.

Best Places to Trigger Frostspore Infection

To increase your chances, visit these spots:

• Around the Fishing Village, especially near the eastern entrance across the Giantwood River bridge.
• Near Onsen Mountain, particularly under the bridge leading to the ruins.
• In the center of town, on the road between Residential Street and Art Street.

All Frostspore Fish

During the event, you can catch five unique Frostspore Fish in the Old Sea near the event area. They include:

To catch the Whale Shark, speak with Vanya on Onsen Mountain and participate in the seasonal fishing event.

All Frostspore Bugs

You can find crystallized butterflies in the forest, including:

The fifth butterfly will be available later in the event.

All Winter Birds

Additionally, a variety of winter-adapted birds are around town, including:

The fifth winter bird will also be accessible later in the event.

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