diff --git a/graphics/src/main/java/de/staropensource/sosengine/graphics/types/WindowMode.java b/graphics/src/main/java/de/staropensource/sosengine/graphics/types/WindowMode.java
index 9ad209ac..08c6af1c 100644
--- a/graphics/src/main/java/de/staropensource/sosengine/graphics/types/WindowMode.java
+++ b/graphics/src/main/java/de/staropensource/sosengine/graphics/types/WindowMode.java
@@ -26,6 +26,13 @@ package de.staropensource.sosengine.graphics.types;
  */
 @SuppressWarnings({ "unused" })
 public enum WindowMode {
+    /**
+     * Makes the window invisible and unable to be interacted with.
+     *
+     * @since v1-alpha2
+     */
+    HIDDEN,
+
     /**
      * Makes the window able to be dragged around.
      *