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UEFN v37.50 Update : Brand Islands, LEGO® Extraction & New Prefabs

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UEFN v37.50 Update : Brand Islands, LEGO® Extraction & New Prefabs

Fortnite v37.50 Ecosystem Update: What UEFN Creators Need to Know

Fortnite v37.50 continues Epic’s late‑September momentum with a creator‑focused ecosystem update that expands brand integration, LEGO® Island depth, and seasonal content, while tightening stability across UEFN and Creator Portal workflows. This release is less about experimental systems and more about scaling production, IP collaboration, and long‑term island operations.

Key highlights include the ability to convert existing islands into Brand Islands, a substantial wave of LEGO® Island templates, devices, and assets, new Butter Barn prefabs, visual upgrades for KPop Demon Hunters islands, and additional creature and container content just in time for seasonal events.

Below is a structured breakdown of what’s new in v37.50, why it matters, and where creators should focus. For full technical details and implementation guidance, readers should refer directly to Epic’s official documentation.

Convert Your Islands into Brand Islands

One of the most impactful additions in v37.50 is the ability to convert an existing island into a Brand Island.

What This Enables

Creators can now:

This feature significantly lowers the barrier to entry for working with licensed content and aligns with Epic’s broader push toward sustainable creator partnerships and branded experiences.

Creators interested in this workflow should review Epic’s documentation on converting islands into Brand Islands before making changes.

LEGO® Islands: Major Content and Feature Expansion

v37.50 delivers one of the largest LEGO® Island updates to date, introducing new templates, devices, items, and customization options.

LEGO® PvP Extraction Template

A standout addition is the LEGO® PvP Extraction Template, which teaches creators how to build structured extraction‑style gameplay.

The template demonstrates:

Creators can explore the playable example and teaching zone directly in UEFN. For deeper design guidance, Epic recommends reviewing the LEGO® PvP Extraction Template documentation.

New LEGO® Tools, Items, and NPC Customization

New LEGO® Weapons and Tools

LEGO® Islands receive a wide range of new tools with rarity variants, including:

New Ammo Types

New LEGO® Items

Together, these additions support deeper progression, crafting, and combat‑focused LEGO® experiences.

Over 250 New LEGO® NPC Styles

Creators can now choose from over 250 new LEGO® Styles compatible with the NPC Spawner device, dramatically increasing character variety and visual storytelling options.

Stat Powerup Device for LEGO® Islands

The Stat Powerup device is now available for LEGO® Islands. When paired with the Stat Creator device, creators can design custom statistics such as:

This device is used extensively in the LEGO® PvP Extraction Template and provides a foundation for RPG‑style systems within LEGO® Islands.

KPop Demon Hunters Visual Enhancements

Creators working on KPop Demon Hunters islands gain new visual tools in v37.50.

New Aura VFX for Objects

These effects are now available as static mesh VFX, allowing creators to drag and apply them directly to objects in the viewport. This makes it easier to highlight objectives, powerful items, or narrative set pieces.

As always, creators should follow the official KPop Demon Hunters Brand and Creator Rules when publishing.

New Wildlife and Seasonal Content

Pumpkin Container

The Pumpkin Container has been added to the Chest and Ammo Gallery, making it easy to incorporate seasonal or spooky‑themed loot interactions.

Hive Swarmer Bugs

The Wildlife Spawner and Hive Stash systems expand further with the ability to spawn hive swarmer bugs, adding more dynamic enemy encounters to islands.

New Prefabs and Galleries: Butter Barn

The iconic Butter Barn arrives in UEFN and Creative with a full prefab and gallery set:

These assets are ideal for rural, roadside, or nostalgia‑driven island themes.

Voting Device UI Improvements

Creators can now:

This enables more polished, responsive in‑game decision systems.

Stability, Device, and Verse Improvements

v37.50 includes a broad range of fixes across the ecosystem:

Device and Ecosystem Fixes

UEFN and Verse Fixes

Creators with live islands should note that republishing may require updating Verse constructor order, as enforced by the compiler.

Unreal Revision Control (URC)

Final Thoughts

Fortnite v37.50 reinforces Epic’s strategy of turning UEFN into a long‑term production platform rather than a purely experimental toolset. Brand Island conversion opens the door to broader IP collaboration, LEGO® Islands continue maturing into deep standalone experiences, and seasonal content keeps the ecosystem fresh and relevant.

Creators focused on scalability, branded content, and persistent progression systems will find v37.50 especially valuable.

For full release notes, implementation details, and ongoing updates, creators should review Epic’s official v37.50 documentation : v37.50 Fortnite Ecosystem Updates and Release Notes

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