diff --git a/stream.md b/stream.md
index afc22f1..05634a1 100644
--- a/stream.md
+++ b/stream.md
@@ -74,6 +74,13 @@ this.flags.set(Flags.GamepadInput, new _SettingFlag__WEBPACK_IMPORTED_MODULE_2__
 this.flags.set(Flags.XRControllerInput, new _SettingFlag__WEBPACK_IMPORTED_MODULE_2__.SettingFlag(Flags.XRControllerInput, 'XR controller input', 'If enabled, send XR controller events to streamer', false, useUrlParams));
 ```
 
+## multiplayer
+
+pixel streamingとcallab viewerやvagon streamを使用すると実現できるかもしれません。
+
+- https://dev.epicgames.com/documentation/en-us/unreal-engine/collab-viewer-template-quick-start-in-unreal-engine
+- https://vagon.io/blog/how-to-create-multiplayer-unreal-engine-experiences
+
 ## pixel streaming(PS) ext plugin
 
 [superhero fligth animations](https://www.fab.com/ja/sellers/Indie-us%20Games)を出しているところがやっているのがlocal multiplayerのpixel streamingで、一つのアプリ起動で複数人にcamera, controllerを割り当てる。plugin自体はまだ非公開。