diff --git a/.gitattributes b/.gitattributes
index 07d705f0d..26001c57c 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -31,3 +31,4 @@ vendor/raylib/v6/windows/raygui.dll filter=lfs diff=lfs merge=lfs -text
 vendor/raylib/v6/windows/raygui.lib filter=lfs diff=lfs merge=lfs -text
 vendor/raylib/v6/windows/rayguidll.lib filter=lfs diff=lfs merge=lfs -text
 vendor/box3d/lib/linux-amd64/libbox3d.a filter=lfs diff=lfs merge=lfs -text
+vendor/box3d/lib/darwin/libbox3d.a filter=lfs diff=lfs merge=lfs -text
diff --git a/vendor/box3d/box3d.odin b/vendor/box3d/box3d.odin
index ca5221210..834592c82 100644
--- a/vendor/box3d/box3d.odin
+++ b/vendor/box3d/box3d.odin
@@ -19,6 +19,11 @@ when ODIN_OS == .Windows {
 	foreign import lib {
 		"lib/linux-amd64/libbox3d.a",
 	}
+} else when ODIN_OS == .Darwin && (ODIN_ARCH == .arm64 || ODIN_ARCH == .amd64) && !BOX3D_SHARED {
+	@(export)
+	foreign import lib {
+		"lib/darwin/libbox3d.a",
+	}
 } else {
 	@(export)
 	foreign import lib {
diff --git a/vendor/box3d/lib/darwin/README.md b/vendor/box3d/lib/darwin/README.md
new file mode 100644
index 000000000..5ebbd2102
--- /dev/null
+++ b/vendor/box3d/lib/darwin/README.md
@@ -0,0 +1,10 @@
+# Box3D MacOS build
+
+Build steps:
+
+```
+cmake --preset macos -DCMAKE_OSX_DEPLOYMENT_TARGET="11.0" -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64"
+cmake --build --preset macos-release -DCMAKE_OSX_DEPLOYMENT_TARGET="11.0" -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64"
+```
+
+This makes a fat binary that works on ARM and Intel MacOS. And it sets the target (`-minimum-os-version` in Odin) to 11.0 (Odin's default).
diff --git a/vendor/box3d/lib/darwin/libbox3d.a b/vendor/box3d/lib/darwin/libbox3d.a
new file mode 100644
index 000000000..a3627ca45
--- /dev/null
+++ b/vendor/box3d/lib/darwin/libbox3d.a
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b43006bed07643d6a35a71d5bf8b7176ba4e231085d7c78a0987f27b3d9510dd
+size 2150728