diff --git a/README.md b/README.md
index dfbe049..3acb2ed 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,7 @@ Graphic Engine & Game Engine open source list！
 * [Lumberyard](https://github.com/aws/lumberyard)
 * [Klayag](https://github.com/gongminmin/KlayGE)
 * [Urho3D](https://github.com/urho3d/Urho3D)
+* [Duality](https://github.com/AdamsLair/duality)
 * [bsf](https://github.com/GameFoundry/bsf) Modern C++14 library for the development of real-time graphical applications https://www.bsframework.io
 * [OpenSceneGraph](https://github.com/openscenegraph/OpenSceneGraph)
 * [Ogre](https://github.com/ogrecave) ogre github mirror