Getting Started

You just bought the plugin (or you’re about to). The next 10 minutes get you from “downloaded zip” to “the AI is building Blueprints for me.” Here’s the whole journey.

We’ll go through it in order:

Install the plugin in your engine
Activate your license
Open the plugin window
Send your first AI prompt

If you get stuck at any step, jump to Troubleshooting at the bottom.

Before you start — what you need

Thing	Why
Unreal Engine 5.4, 5.5, 5.6, or 5.7	The plugin runs inside the editor
Windows, macOS, or Linux	All three work
A FAB Marketplace order ID or a license key from our website	Activates the plugin on your machine

That’s the whole list. You don’t need an API key, you don’t need to install Python or anything else. The plugin ships with free AI usage built in — you can try it the moment activation finishes.

Step 1 — Install the plugin

You bought the plugin on FAB Marketplace. Now we install it in your engine.

Open the Epic Games Launcher.
Go to your Library.
Find the plugin in your purchases and click Install to Engine.
Pick the engine version you want to install it on (5.4, 5.5, 5.6, or 5.7). You can install to more than one — pick whichever you’ll use.
Wait for the install to finish. Usually 1–2 minutes.

Now open your Unreal Engine project:

Go to Edit → Plugins in the top menu.
Search for “Ultimate Engine Co-Pilot”.
Tick the checkbox to enable it.
The editor will ask you to restart. Click Restart Now.

When the editor comes back, the plugin is installed but not yet activated. Next step.

Step 2 — Activate your license

The first time the editor reopens with the plugin enabled, an activation window pops up. There are two ways in — pick whichever matches how you bought.

If you bought on FAB Marketplace

Click the FAB Marketplace tab.
Type the email address you used on FAB.
Type your FAB Order ID. It starts with A followed by 16 digits, like A1234567890123456. You can find it in the email FAB sent you when you purchased.
Click Submit Order.
Wait. Verification usually finishes in under 5 minutes — the plugin checks automatically. The window updates when you’re activated.

If you bought on our website

Click the Website Purchase tab.
Type your license key. It looks like XXXXX-XXXXX-XXXXX-XXXXX.
Click Activate License.

Either way, once activation succeeds, the plugin is tied to your machine. You only do this once. Activation carries across every project on this computer and survives editor restarts.

Step 3 — Open the plugin

Open the plugin window from:

Window menu → Ultimate Engine Co-Pilot, or
The plugin icon in the top toolbar

The window opens with four main tabs along the top-left:

Tab	What it’s for
Blueprint Architect	The main chat. You type what you want, the AI builds it.
Project Scanner	Index your whole project so the AI can answer questions about anything in it.
Tools	Quick access to plugin utilities — image generation, mesh generation, sound generation, and more.
Learn	Built-in courses, tutorials, and a skill tree to guide you through the plugin.

You’ll also see a gear icon in the top-right and a Settings button in the bottom-left — both open the same Settings panel. That’s where you configure AI providers, themes, voice, and everything else.

The bottom-left strip also has shortcuts to Instructions, GDD, and AI Memory — features you’ll meet later. For your first prompt, click Blueprint Architect.

Step 4 — Try your first prompt

You’re in the chat. In the message box at the bottom, type:

Create a third person character with movement and a health system

Press Enter (or click Send).

You’ll see the AI work in real time:

A message bubble appears with the AI’s plan
Tool calls scroll past as the AI creates the Blueprint, adds components, sets up variables, and wires the logic
When it’s done, you have a working Blueprint in your project

That’s it. You’re up and running.

If you want something more specific, try one of these:

Make me a UI widget with a health bar that fills based on a player variable

Create a Niagara system that emits sparks when an actor takes damage

Build a save system that stores player position and inventory

The AI handles all of it.

What you get for free

The plugin ships with free AI usage built in. You can use it straight away — no signup, no API key, no payment. Two free options come included:

Blueprints Lab 1.1 — the more powerful one, for big tasks
Blueprints Lab 0.9 — faster, for quick edits

Each option has a usage limit per day. If you hit it, you can either wait for the limit to reset, or set up your own AI provider (we support OpenAI, Claude, Gemini, DeepSeek, and more — see AI Providers).

Provider slots and the ALT+1 to ALT+9 hotkey

The plugin gives you 9 provider slots, switchable with Left ALT + 1 through Left ALT + 9. Each slot is independently configurable — you can set one slot to use the free tier, another to use your Claude API key, another to run a local LLM, another to drive a CLI agent like Claude Code, and so on.

Hit ALT+3 at any point and the active slot switches to slot 3. A small toast pops up confirming the switch (e.g. “Switched to: Claude API”). The change applies to the next message you send — any reply the AI is currently generating finishes through the old slot, and your next prompt goes out through the new one. This lets you swap between cheap-and-fast and powerful-and-expensive in a single keystroke without breaking your conversation flow.

Supported engines and platforms

Engine version	Status
Unreal Engine 5.4	Supported
Unreal Engine 5.5	Supported
Unreal Engine 5.6	Supported
Unreal Engine 5.7	Supported

Platform	Status
Windows	Supported
macOS	Supported
Linux	Supported

The plugin is editor-only — it helps you build games but doesn’t get included in the games you ship. Your players never need it.

Updating the plugin

There are two kinds of update.

New plugin versions

When we ship a new version with bug fixes or new features:

Open the Epic Games Launcher.
Go to Library → click Installed Plugins under your engine version.
If an update is available you’ll see an Update button next to the plugin.
Click Update and wait for it to install.
Restart the Unreal Editor.

Installed Plugins button

Cloud content updates

Some things update automatically in the background — AI prompt files, tool documentation, model lists. You don’t need to reinstall anything to get these. They sync the next time you start the editor with the plugin loaded.

You can see your current plugin version (and the cloud-update status) in Settings → Updates.

Removing or reinstalling the plugin

If something’s gone wrong and you want a clean slate:

Step 1 — Remove from the engine

Open the Epic Games Launcher.
Go to Library → Installed Plugins.
Find the plugin and click Remove.

Remove plugin from engine

Step 2 — Delete leftover files (Windows path shown)

After removal, check that there’s nothing left over. Open File Explorer and go to:

C:\Program Files\Epic Games\UE_5.X\Engine\Plugins\Marketplace\UltimateBlueprintGenerator

Replace 5.X with your engine version. If the folder is still there, delete it.

Heads up about the folder name: the plugin’s user-facing brand is Ultimate Engine Co-Pilot, but on disk the folder keeps an older name (UltimateBlueprintGenerator). That’s intentional — renaming would lose your saved settings.

Step 3 — Reinstall

Go back to your FAB Library, find the plugin, click Install to Engine, and pick your engine version. You’ll get a fresh copy.

Your activation still applies — you don’t have to enter your license key or order ID again.

Troubleshooting

The activation window doesn’t appear. The plugin only shows the activation window on first launch after enabling. Open the plugin window manually (Window → Ultimate Engine Co-Pilot) — the activation will appear in the Settings panel under License.

Verification is taking longer than 5 minutes. FAB occasionally has a delay. You can keep the activation window open — it checks automatically every 30 seconds. If 30 minutes pass with no result, double-check the order ID and email you entered exactly match what’s on your FAB receipt.

The plugin doesn’t appear in the Plugins menu. Make sure you installed it into the right engine version. You can install to multiple versions — each install is separate. Restart the editor after enabling.

The free AI shows “rate limited” right away. You may have used your daily quota in another project. Quotas reset at midnight UTC. While you wait, you can plug in your own AI provider in Settings → AI Models — see AI Providers.

If you hit something not on this list, the FAQ covers more edge cases. Still stuck? Reach us on Discord.

What’s next

Now that you’re up and running, the most useful next reads:

Blueprint Architect — the AI chat in detail, including the four interaction modes (just chat, ask before edit, plan, auto edit)
AI Providers — how to use your own OpenAI / Claude / Gemini key for unlimited usage
Project Scanner — index your whole project so the AI can reason about anything in it

Welcome aboard.