diff --git a/gameforui.go b/gameforui.go
index 99abfaa20..523c60725 100644
--- a/gameforui.go
+++ b/gameforui.go
@@ -72,13 +72,13 @@ func (c *gameForUI) Update() error {
 	return c.game.Update()
 }
 
-func (c *gameForUI) Draw(screenScale float64, offsetX, offsetY float64, needsClearingScreen bool, framebufferYDirection graphicsdriver.YDirection, screenClearedEveryFrame bool) error {
-	c.offscreen.mipmap.SetVolatile(screenClearedEveryFrame)
+func (c *gameForUI) Draw(screenScale float64, offsetX, offsetY float64, needsClearingScreen bool, framebufferYDirection graphicsdriver.YDirection, clearScreenEveryFrame bool) error {
+	c.offscreen.mipmap.SetVolatile(clearScreenEveryFrame)
 
 	// Even though updateCount == 0, the offscreen is cleared and Draw is called.
 	// Draw should not update the game state and then the screen should not be updated without Update, but
 	// users might want to process something at Draw with the time intervals of FPS.
-	if screenClearedEveryFrame {
+	if clearScreenEveryFrame {
 		c.offscreen.Clear()
 	}
 	c.game.Draw(c.offscreen)
diff --git a/internal/ui/ui_cbackend.go b/internal/ui/ui_cbackend.go
index ddd3dda5c..8f3cd2c6e 100644
--- a/internal/ui/ui_cbackend.go
+++ b/internal/ui/ui_cbackend.go
@@ -58,10 +58,6 @@ func (u *UserInterface) Run(game Game) error {
 	}
 }
 
-func (*UserInterface) RunWithoutMainLoop(game Game) {
-	panic("ui: RunWithoutMainLoop is not implemented")
-}
-
 func (*UserInterface) DeviceScaleFactor() float64 {
 	return deviceScaleFactor
 }
diff --git a/internal/ui/ui_glfw.go b/internal/ui/ui_glfw.go
index 936b2c80f..54b585dde 100644
--- a/internal/ui/ui_glfw.go
+++ b/internal/ui/ui_glfw.go
@@ -642,10 +642,6 @@ func init() {
 	runtime.LockOSThread()
 }
 
-func (u *UserInterface) RunWithoutMainLoop(game Game) {
-	panic("ui: RunWithoutMainLoop is not implemented")
-}
-
 // createWindow creates a GLFW window.
 //
 // width and height are in GLFW pixels (not device-independent pixels).
diff --git a/internal/ui/ui_js.go b/internal/ui/ui_js.go
index fe5585f4c..83f1e0057 100644
--- a/internal/ui/ui_js.go
+++ b/internal/ui/ui_js.go
@@ -600,10 +600,6 @@ func (u *UserInterface) Run(game Game) error {
 	return <-u.loop(game)
 }
 
-func (u *UserInterface) RunWithoutMainLoop(game Game) {
-	panic("ui: RunWithoutMainLoop is not implemented")
-}
-
 func (u *UserInterface) updateScreenSize() {
 	switch {
 	case document.Truthy():
diff --git a/internal/ui/ui_mobile.go b/internal/ui/ui_mobile.go
index ab717a9c2..d5bd9968a 100644
--- a/internal/ui/ui_mobile.go
+++ b/internal/ui/ui_mobile.go
@@ -250,7 +250,11 @@ func (u *UserInterface) Run(game Game) error {
 	return nil
 }
 
-func (u *UserInterface) RunWithoutMainLoop(game Game) {
+func RunWithoutMainLoop(game Game) {
+	theUI.runWithoutMainLoop(game)
+}
+
+func (u *UserInterface) runWithoutMainLoop(game Game) {
 	go func() {
 		if err := u.run(game, false); err != nil {
 			u.errCh <- err
diff --git a/run_mobile.go b/run_mobile.go
index 85c797518..befb1cfc0 100644
--- a/run_mobile.go
+++ b/run_mobile.go
@@ -29,5 +29,5 @@ import (
 //
 // TODO: Remove this. In order to remove this, the gameForUI should be in another package.
 func RunGameWithoutMainLoop(game Game) {
-	ui.Get().RunWithoutMainLoop(newGameForUI(game))
+	ui.RunWithoutMainLoop(newGameForUI(game))
 }