diff --git a/Makefile b/Makefile
index 0ed8d71f..d54c387e 100755
--- a/Makefile
+++ b/Makefile
@@ -67,4 +67,13 @@ build-emscripten-image:
 	
 run-emc:
 	@mkdir -p $(ARTIFACTS_DIR)/emscripten
-	docker run --rm -v $(PWD):/src -w /src $(IMAGE_EMSCRIPTEN) bash -lc 'meson setup build-emscripten --cross-file emscripten.cross -Dbuildtype=release -Db_ndebug=true -Ddefault_library=static -Dcpp_std=c++11 && meson compile -C build-emscripten && cp build-emscripten/cell.wasm build-emscripten/cell.js $(ARTIFACTS_DIR)/emscripten/'
\ No newline at end of file
+	docker run --rm -v $(PWD):/src -w /src $(IMAGE_EMSCRIPTEN) bash -lc 'meson setup build-emscripten --cross-file emscripten.cross -Dbuildtype=release -Db_ndebug=true -Ddefault_library=static -Dcpp_std=c++11 && meson compile -C build-emscripten && cp build-emscripten/cell.wasm build-emscripten/cell.js $(ARTIFACTS_DIR)/emscripten/'
+	
+WINFILES = cell.exe steam_api64.dll steam_appid.txt tangletart.bat
+WINDIRS = scripts .cell accio prosperon
+
+win_release: FORCE
+	make dockerwin
+	cp build-win/cell.exe .
+	cp sdk/redistributable_bin/win64/steam_api64.dll .
+	zip -r $@ $(WINFILES) $(WINDIRS) --exclude=*.git* --exclude=*_doc* --exclude=*_concepts*
\ No newline at end of file
diff --git a/prosperon/tween.cm b/prosperon/tween.cm
index 87e0ff7d..535d1cde 100644
--- a/prosperon/tween.cm
+++ b/prosperon/tween.cm
@@ -120,6 +120,12 @@ Tween.prototype.seek = function(global_time) {
   }
 }
 
+Tween.prototype.cancel = function() {
+  if (this.engine) {
+    this.engine.remove(this)
+  }
+}
+
 Tween.prototype.toJSON = function() {
   return {
     startVals: this.startVals,
diff --git a/tangletart.bat b/tangletart.bat
index b2593aa3..9f38e8e7 100644
--- a/tangletart.bat
+++ b/tangletart.bat
@@ -1,3 +1,3 @@
 @echo off
-"%~dp0cell.exe" prosperon accio
+"%~dp0cell.exe" accio
 pause