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Unreal Editor for Fortnite · Verse

UEFN Development — Custom Fortnite Islands

We design and build Fortnite islands in Unreal Editor for Fortnite (UEFN): original game modes, Verse-scripted mechanics and branded worlds that meet players where they already play.

UEFN & VerseBranded islandsPublishing & updates
UEFN & Fortnite Islands

Your game, inside Fortnite

UEFN brings Unreal Engine tools to Fortnite Creative. A custom island can have its own rules, art, audio and progression, and players jump in straight from Fortnite — no separate download or store listing.

We handle the whole island: game design built around Fortnite discovery and retention, Verse programming, custom assets within UEFN memory budgets, playtesting and publishing through Epic’s creator tools.

  • Original game modes & mini-games
  • Verse scripting & custom devices
  • Brand activations & live events
  • Publishing, analytics & updates

What we build

TycoonParkour & obbyDeathrunBox fights & PvPZone warsHorrorRacingEscape roomsBrand activationsVirtual events
What we offer

Our UEFN & Fortnite Islands services

Discuss your scope
01

Custom island development

Complete islands from concept to publish — tycoons, parkour, deathruns, PvP arenas, horror, racing and more.

02

Verse programming

Game logic, custom devices, UI, progression and persistence written in Verse for mechanics beyond the standard devices.

03

Branded experiences

Worlds that put your brand, product or IP in front of players, with gameplay designed within Epic’s rules for brands.

04

Level & world design

Layouts, pacing and landmarks built for readability, replay value and a strong first minute.

05

Custom art & audio

Models, materials, animation, VFX and sound imported into UEFN and optimised for memory budgets.

06

Launch & live updates

Thumbnails, descriptions, playtests, publishing and regular updates guided by island analytics.

How we deliver

Our UEFN & Fortnite Islands process

Clear stages, visible progress and a playable build every week — no black boxes.

01

Discover

Goals, audience, platforms and budget turned into a clear scope, plan and estimate.

Scope · Estimate · Roadmap
02

Prototype

A playable prototype that proves the core loop or key interaction before full production.

Playable prototype
03

Produce

Agile sprints with a playable build every week — art, code and design moving together.

Weekly builds
04

Test & launch

Real-device QA, optimisation and store submission, rehearsed well before launch day.

QA report · Release
05

Grow

LiveOps, updates and analytics — or a clean, documented handover to your team.

Updates · Handover
FAQ

UEFN & Fortnite Islands FAQ

What is UEFN?

Unreal Editor for Fortnite (UEFN) is Epic Games’ version of Unreal Editor for building Fortnite islands. It adds custom assets, Verse programming and Unreal tools such as materials, animation and Sequencer to Fortnite Creative.

What is Verse?

Verse is the programming language Epic created for Fortnite. We use it for custom game rules, devices, UI and progression that go beyond the built-in devices.

Can brands publish islands in Fortnite?

Yes. Branded islands are allowed but must follow Epic’s rules for brands and creators, including disclosure and content guidelines. We check your concept against them from the start.

How do Fortnite islands make money?

Eligible creators can join Epic’s creator programme, which pays out based on player engagement with their published islands. Terms change, so we review the current programme with you during planning.

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Start a project

Start your UEFN & Fortnite Islands project

Share your idea, prototype or live game. We reply within one business day with questions, a suggested approach and a realistic estimate.

  • Free discovery call & estimate
  • NDA on request — your IP stays yours
  • Dubai & UK teams, working worldwide
hello@sumigames.com

Send us a message

We reply within one business day.

We reply within one business day. Happy to sign an NDA before you share details.