diff --git a/core/src/love/distributedrebirth/demo4d/MainScreen.java b/core/src/love/distributedrebirth/demo4d/MainScreen.java
new file mode 100644
index 00000000..dcccbbf5
--- /dev/null
+++ b/core/src/love/distributedrebirth/demo4d/MainScreen.java
@@ -0,0 +1,31 @@
+package love.distributedrebirth.demo4d;
+
+import com.badlogic.gdx.ApplicationAdapter;
+import com.badlogic.gdx.graphics.g2d.BitmapFont;
+import com.badlogic.gdx.graphics.g2d.SpriteBatch;
+import com.badlogic.gdx.utils.ScreenUtils;
+
+public class MainScreen extends ApplicationAdapter {
+	SpriteBatch batch;
+	BitmapFont font;
+	
+	@Override
+	public void create () {
+		batch = new SpriteBatch();
+		font = new BitmapFont();
+	}
+
+	@Override
+	public void render () {
+		ScreenUtils.clear(1, 0, 0, 1);
+		batch.begin();
+		font.draw(batch, "Hello World.", 33, 33);
+		batch.end();
+	}
+	
+	@Override
+	public void dispose () {
+		batch.dispose();
+		font.dispose();
+	}
+}
diff --git a/desktop/src/love/distributedrebirth/demo4d/desktop/DesktopLauncher.java b/desktop/src/love/distributedrebirth/demo4d/desktop/DesktopLauncher.java
new file mode 100644
index 00000000..8ed403c7
--- /dev/null
+++ b/desktop/src/love/distributedrebirth/demo4d/desktop/DesktopLauncher.java
@@ -0,0 +1,12 @@
+package love.distributedrebirth.demo4d.desktop;
+
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
+import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
+import love.distributedrebirth.demo4d.MainScreen;
+
+public class DesktopLauncher {
+	public static void main (String[] arg) {
+		LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();
+		new LwjglApplication(new MainScreen(), config);
+	}
+}