Describe your game.
Get UEFN-ready Verse.
Type what you want: the copilot assembles visual WHEN / IF / DO rules and generates clean, deterministic Verse, validated against the official UEFN digest.
or open the builder manually (no account required)
You own the generated code · UEFN 41.00 verified
One rule. One block of Verse.
Pick a scenario and watch the Verse get generated. The exact same flow happens in the builder, only with more atoms and more rules.
Rule (visual)
OnElim(Eliminator:?agent):void= if (Agent := Eliminator?): ScoreManager.SetScoreAward(100) ScoreManager.Activate(Agent) ElimMessage.Show(Agent)From idea to compilable Verse in 3 steps.
Pick a template
Start from a ready-made preset or a blank canvas, whichever fits.
Customize rules
Drag atoms into WHEN / IF / DO blocks. Live preview as you build.
Copy into UEFN
Paste the generated Verse, hit Play. Done.
Reliable UEFN logic, built from verified atoms.
ChatGPT is great for brainstorming. When you need UEFN logic that ships, Verse Builder builds it from atoms validated against the official UEFN digest, so the output stays clean and deterministic.
- Visual gameplay rules + HUD builder
- Atoms version-pinned to UEFN 41.00
- Deterministic: validated against the UEFN digest
# Built from verified devicesVolumeDevice.AgentEntersEvent.Subscribe(OnEnter)# the device and event exist in the digestTeleporter.Activate(Agent)# Activate, not the invented Teleport(Agent)ItemRemover.Remove(Agent)# item removal lives on item_remover_device
Design custom UEFN HUDs visually.
Verse Builder includes a visual HUD Builder for the interface your players see in-game. Add widgets, arrange layouts, preview your HUD, then generate the Verse UI implementation.
- Build custom HUDs without hand-coding Verse UI
- Create counters, timers, bars and player feedback visually
- Connect UI elements to your gameplay data
- Iterate fast on layout and player experience
Start from a proven UEFN system.
Open an official template, customize the logic and HUD, then copy the generated Verse into your UEFN project.
Same rules in. Same Verse out. Every time.
Verse Builder doesn't guess: it builds gameplay and HUDs from structured visual rules, supported atoms and UI definitions.
100% deterministic output
No LLM guesses. Every line is built from typed atoms, validated against the official UEFN device digest. Same rules in, same Verse out, every time.
WHEN / IF / DO visual flow
Build with colored blocks. No syntax to learn, no indentation traps.
Visual HUD builder
Design custom Verse UI (counters, bars, timers, panels) without hand-coding widgets.
UEFN 41.00 pinned
Generated code always matches the current shipping version.
Copy-paste into UEFN
Hit copy, paste into UEFN, press Play. No package, no setup.
Frequently asked questions.
Everything about building logic, HUDs, pricing and the beta.
Still have a question?
Read the docsNo. Verse Builder is designed for UEFN creators who want to build gameplay logic and HUDs visually. You choose events, conditions, actions and UI elements, then generate Verse for UEFN.
Yes. Verse Builder includes a visual HUD Builder for creating custom Verse UI interfaces without manually writing Verse UI code. Add widgets, arrange layouts, preview your HUD and generate the implementation.
You can build interfaces with supported widgets (text, bars, images, buttons, timers, boards, panels, layout groups and lines), arranged across pages, depending on the current widget set in the builder.
The visual builder is free: no login, no credit card. The AI copilot comes with 5 free generations; unlimited copilot is €9.99/month, a founder rate locked for life during the beta.
Generated code targets UEFN 41.00 (++Fortnite+Release-41.00-CL-54872343). Every device, event and method comes from the official digest for that version. When Epic ships a new UEFN release, we re-validate every atom against the new digest and re-pin within days, so the generator never silently drifts out of date.
That's the whole point. Verse Builder generates deterministic Verse from supported rules, atoms and UI structures (no LLM guessing), and every atom is checked against the live UEFN digest. Because UEFN evolves, always test the generated code inside your own project.
ChatGPT writes code freely and can hallucinate methods, events, devices or UI APIs. Verse Builder uses a structured visual rule system, supported atoms and HUD definitions, so the output is predictable and repeatable.
Verse Builder is best for common gameplay and UI systems: shops, buttons, teleporters, score logic, HUD feedback, pickups, zones, simple game flows and custom HUD layouts.
Some advanced or highly custom mechanics and UI systems may still require manual Verse. If something is missing, you can request a template, widget or atom from the site; the most requested additions are prioritized.
Epic's assistant is great for learning Verse and getting snippets to study. Verse Builder solves a different problem: it generates complete systems (shops, quests, tycoon loops) built to compile and validated against the official UEFN digest, without you reading or debugging a line of code. Many creators use both.
Yes. Everything you build is yours: the rules, the generated Verse, the project. We never claim ownership over your code or your island.
Tell us what you need next.
Get notified of new templates
New starter packs ship regularly. Leave your email and we'll tell you when one drops. No spam, no account.
What's missing?
Need a template, HUD widget or atom we don't have yet? Tell us what you're building; the most requested ideas get built first.
Build your first UEFN system now.
Open the builder, pick a template, design your logic or HUD visually and copy the generated Verse into UEFN. No account, no credit card, no setup.
Free during beta · No login required · You own the generated code