diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..18378da
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "External/Imgui"]
+	path = External/Imgui
+	url = https://github.com/ocornut/imgui.git
diff --git a/External/Imgui b/External/Imgui
new file mode 160000
index 0000000..21d3299
--- /dev/null
+++ b/External/Imgui
@@ -0,0 +1 @@
+Subproject commit 21d3299e588b5c702dcca0f448b4f937af369b4a