Fortnite v38.10 Ecosystem Update: What UEFN Creators Need to Know
Fortnite v38.10 is a major monetization-focused update for Unreal Editor for Fortnite (UEFN). While v38.00 laid the groundwork with Verse-powered UI and updated engagement payouts, v38.10 moves the creator economy forward with something creators have been waiting for since Epic’s September announcement: developer tools for in-island transactions are now live in UEFN (preview).
This release gives developers the ability to test in-game item sales in unpublished projects today, ahead of publishing opening for live V-Bucks purchases. Alongside monetization tooling, v38.10 adds new debug commands, expands the User Interfaces Feature Template, introduces Shogun’s Solitude prefabs and galleries, improves Fortnite Tools Mode for faster building, and rolls out automatic localization export during private version creation.
Below is a structured breakdown of the most important changes in v38.10 and what creators should do next. For full technical specs, restrictions, and step-by-step implementation, readers should refer directly to Epic’s official v38.10 documentation.
In-Island Transactions Tools Are Now Available in UEFN (Preview)
The centerpiece of v38.10 is the release of in-island transaction developer tools in preview.
What You Can Do Right Now
Creators can now:
- Implement transaction flows in unpublished projects
- Test in-island product definitions and purchase logic
- Validate gameplay benefits granted by purchased products
This is the final “developer readiness” stage before publishing opens for islands that support V-Bucks purchases.
What’s Coming Next
Epic confirmed that:
- Publishing with in-island transactions will open soon
- Epic will share more on timelines in the coming weeks
- Once publishing is enabled, creators will be able to monitor transaction performance in Creator Portal
This positions v38.10 as the update where monetization goes from “announced” to “buildable.”
Rules and Restrictions Matter
Epic explicitly directs creators to review:
- Fortnite Developer Rules
- In-Island Transactions Restrictions
Before implementing transactions, creators should treat these documents as production constraints, not optional reading—especially if their island includes progression, loot, or competitive incentives.
In-Island Transactions Feature Example
UEFN now includes a dedicated In-Island Transactions Feature Example designed to demonstrate how transaction products map to gameplay benefits.
What the Example Shows
Products defined in Verse can be associated with:
- Items
- Gameplay attribute increases
- Access to new areas
- Other gameplay benefits
The examples are built with farm-themed assets and progress in complexity, teaching:
- How to structure product definitions
- How to organize transaction-driven gameplay systems
- Tools and patterns to improve iteration and maintainability
For creators, this template is less about copying an end result and more about learning the expected architectural approach for transaction-enabled islands.
New Debug Commands for Transactions Testing
To speed up development and validation, v38.10 adds multiple transaction-focused debug commands to the Beta Debug Command menu.
- Grant All Products – Grants the maximum amount of all products
- Grant One of All Products – Grants one of each product
- Force Remove Products – Removes all owned products
- Open Storefront – Displays a debug storefront with dynamically generated offers
- Purchases Always Fail – Toggle purchase failure on/off to test failure handling
These commands help creators validate edge cases, failure recovery, storefront behavior, and progression gating without repeated manual setup.
User Interfaces Feature Template Updates (Shop UI + Verse Fields)
v38.10 expands the User Interfaces Feature Template with a custom in-island transactions example.
What’s Included
Creators can explore:
- A custom shop UI
- Verse Fields examples showing how UI state updates dynamically
- Widget-based layouts and binding patterns
- n- Custom meter materials via the Fortnite > UI > Materials collection
This template is especially relevant if you’re building a storefront that needs to remain consistent with Fortnite UX expectations while still feeling native to your island.
Known Issue and Workaround
Launching a session or pushing changes in the UI template can cause a compilation error. Epic’s workaround:
- Open
UW_MaterialCollectionScreen - Press Compile
Errors reset when the project is reopened, and Epic has indicated the bug will be fixed in a future release.
Fortnite Tools Mode: New Tools for Faster Scaling
Fortnite Tools Mode continues maturing in v38.10 with tools aimed at scaling production while keeping memory under control.
New / Highlighted Tools
- Create Volume – Create and scale any volume quickly
- Find Overlap – Identify overlapping objects to reduce waste and memory pressure
- Scatter – Randomly distribute static meshes for fast environment building
Additional upgrades were made to Snap to Target and 3D Select for precision placement and selection.
These tools are particularly valuable for teams producing large environments, tycoons, or hub-style islands.
Island Localization Export Is Now Automatic by Default
Island localization is now exported by default and automatically localized when creating a new Private Version.
Where This Applies
- Project > Upload to Private Version
- Project > Publish Project
Opt-Out Options
Creators can:
- Permanently opt out by disabling Automatically Build Localization in Project Settings
- Temporarily opt out for a single Private Version by unchecking Build Localization
If Localization Isn’t Initialized Yet
Epic recommends:
- Generate a Private Version
- Set the native language for the project
This workflow improves international readiness and reduces last-minute localization friction.
New Prefabs and Galleries: Shogun’s Solitude
v38.10 adds a themed content set for builders and environment designers:
- Shogun’s Solitude Castle Prefab
- Shogun’s Solitude Main Square Prefab
- Floor and Stairs Gallery
- Wall Gallery
- Roof Gallery
- Prop Gallery
These assets support feudal-inspired environments, narrative hubs, and combat arenas.
Device Fixes and Ecosystem Improvements
v38.10 includes practical fixes across multiple devices and physics-enabled interactions.
Notable fixes include:
- Air Vent FX no longer plays continually
- Physics-enabled warnings and overlap behaviors corrected
- Teleporter now uses correct velocity behavior and stops nonstop teleport loops
- Crash Pad & Bouncer Gallery FX retrigger overlap issue fixed
- Changing Booth UI correctly closes on remove events
- NPC Spawner now respects warmup/game-start phases correctly
Ecosystem, LEGO, and Editor Improvements
Additional platform updates include:
- Season tags added to weapons for easier searching
- Dynamic resolution support in DX12 when anti-aliasing is disabled
- Phone Tool performance improvements when placing many actors
- LEGO template Verse compilation fix (Santa’s Toy Factory)
- Scene Graph support for map pinging on entities
Unreal Revision Control also receives improvements addressing the “failed to load immutable data” error, plus clearer server connection error reporting.
Final Thoughts
Fortnite v38.10 is the “monetization tooling” release: creators can now build and test in-island transactions in UEFN, validate product flows with debug storefront commands, and begin preparing islands for the moment publishing opens for V-Bucks purchases.
Creators who move early will gain critical iteration time, especially around UX, balance, restrictions compliance, and storefront UI before in-island transactions become a competitive differentiator in discovery.
For the complete release notes, implementation steps, restrictions, and feature examples, readers should review Epic’s official v38.10 documentation : 38.10 Fortnite Ecosystem Updates and Release Notes