LGUI (Lex GUI) - 3D UI System for UE4

liufei - Mar 11, 2019

Powerful Component based 3D UI System, Event Framework, Prefab Workflow, Tween Animation

  • Supported Platforms
  • Supported Engine Versions
    4.24 - 4.27
  • Download Type
    Engine Plugin
    This product contains a code plugin, complete with pre-built binaries and all its source code that integrates with Unreal Engine, which can be installed to an engine version of your choice then enabled on a per-project basis.

LGUI (Lex GUI) - Powerful Component based 3D UI System, Event Framework, Prefab Workflow, Tween Animation.

Component based UI creation workflow!

Build UI inside UE4-Editor’s 3d world, what you see is what you get!

CarCustomization Project: Youtube Bilibili Download from Github

3D Menu: Video

"The Division" like UI: Video

Tutorial Project

Trail Version download(Editor Only)

Here is a HTC Vive VR project: Video 1 Video 2

Another project: Video

All UI of these video is made of LGUI, none UMG or Slate.

Niagara LGUI Renderer: github

Use TexturePacker with LGUI: github

Use BitmapFontGenerator with LGUI: github

New features in LGUI 2.15.0 :

  • UIText now use FText to support localization.
  • New render mode: World Space - LGUI Renderer. Render 3D UI in world space by LGUI's renderer, so it will not affect by UE's post process, and LGUI's post process will work(eg. UIBackgroundBlur).

Technical Details


  • Full source code
  • Create UI directly inside level editor
  • 3D UI in world and screen space
  • Dynamic font
  • Dynamic atlas packing
  • Full editor integration
  • Full Blueprint support
  • Horizontal/ Vertical/ Grid Layout control
  • Component based workflow
  • Flexible event system
  • Customizable event
  • Use prefab to store UI as asset, and restore it at runtime or editor
  • Tween animation system for UI and UE4’s build-in objects, and extensible for custom objects
  • Rich Text
  • UIEffect(Shadow, LongShadow, Outline, GradientColor)
  • Text Animation
  • SpecialEffects(BackgroundBlur, BackgroundPixelate)
  • MSAA

Code Modules:

  •  LGUI (Runtime)
  •  LGUIEditor (Editor)
  •  LTween (Runtime)

Network Replicated: No

Supported Development Platforms: Windows

Supported Target Build Platforms: Windows


Support EMail: 707908214@qq.com

Example Project

Support Forum

Tutorial Channel

技术交流QQ群: 537144721