diff --git a/js/phet-io/states-of-matter-basics-overrides.js b/js/phet-io/states-of-matter-basics-overrides.js
index 1b41dde..ec8d0d7 100644
--- a/js/phet-io/states-of-matter-basics-overrides.js
+++ b/js/phet-io/states-of-matter-basics-overrides.js
@@ -94,6 +94,9 @@ window.phet.preloads.phetio.phetioElementsOverrides =
   "statesOfMatterBasics.statesScreen.model.isExplodedProperty": {
     "phetioFeatured": true
   },
+  "statesOfMatterBasics.statesScreen.model.isPlayingProperty": {
+    "phetioFeatured": true
+  },
   "statesOfMatterBasics.statesScreen.model.pressureProperty": {
     "phetioFeatured": true
   },