diff --git a/area-model-decimals_en.html b/area-model-decimals_en.html
index da7edfd..c1eb077 100644
--- a/area-model-decimals_en.html
+++ b/area-model-decimals_en.html
@@ -17,6 +17,39 @@
 
 <script type="text/javascript">
 
+  window.phet = window.phet || {};
+  window.phet.chipper = window.phet.chipper || {};
+  window.phet.chipper.packageObject = {
+    "name": "area-model-decimals",
+    "version": "1.3.0-dev.0",
+    "license": "GPL-3.0",
+    "repository": { "type": "git", "url": "https://github.com/phetsims/area-model-decimals.git" },
+    "devDependencies": { "grunt": "~1.0.0" },
+    "phet": {
+      "accessible": true,
+      "colorProfile": true,
+      "requirejsNamespace": "AREA_MODEL_DECIMALS",
+      "phetLibs": [ "area-model-common", "twixt", "vegas" ],
+      "runnable": true,
+      "supportedBrands": [ "phet", "adapted-from-phet" ],
+      "simulation": true
+    },
+    "eslintConfig": { "extends": "../chipper/eslint/sim_eslintrc.js" }
+  };
+  window.phet.chipper.stringRepos = [ {
+    "repo": "area-model-common",
+    "requirejsNamespace": "AREA_MODEL_COMMON"
+  }, { "repo": "area-model-decimals", "requirejsNamespace": "AREA_MODEL_DECIMALS" }, {
+    "repo": "joist",
+    "requirejsNamespace": "JOIST"
+  }, { "repo": "scenery-phet", "requirejsNamespace": "SCENERY_PHET" }, {
+    "repo": "sun",
+    "requirejsNamespace": "SUN"
+  }, { "repo": "tambo", "requirejsNamespace": "TAMBO" }, {
+    "repo": "twixt",
+    "requirejsNamespace": "TWIXT"
+  }, { "repo": "vegas", "requirejsNamespace": "VEGAS" } ];
+
   // Identify the brand (assume generated brand if not provided with query parameters)
   const brandMatch = location.search.match( /brand=([^&]+)/ );
   const brand = brandMatch ? decodeURIComponent( brandMatch[ 1 ] ) : 'adapted-from-phet';
@@ -28,6 +61,7 @@
   // Preloads, with more included for phet-io brand
   let preloads = [
     '../sherpa/lib/mdn-array-from-polyfill.js',
+    '../sherpa/lib/es6-promise-1e68dc.auto.min.js',
     '../joist/js/splash.js',
     '../sherpa/lib/jquery-2.1.0.js',
     '../sherpa/lib/lodash-4.17.4.js',
@@ -55,25 +89,28 @@
     ] );
   }
 
+  // TODO: es6 modules won't need a "main" param in this function
   // Loads a synchronously-executed asynchronously-downloaded script tag, with optional data-main parameter.
   // See http://www.html5rocks.com/en/tutorials/speed/script-loading/ for more about script loading. It helps to
   // load all of the scripts with this method, so they are treated the same (and placed in the correct execution
   // order).
-  const loadURL = ( preloadURL, main ) => {
+  const loadURL = ( preloadURL, type = 'text/javascript' ) => {
     const script = document.createElement( 'script' );
-    if ( typeof main === 'string' ) {
-      script.setAttribute( 'data-main', main );
-    }
-    script.type = 'text/javascript';
+    script.type = type;
     script.src = preloadURL + queryAppend;
     script.async = false;
     document.head.appendChild( script );
   };
 
+  // Kick off string loading immediately
+  loadURL( '../chipper/js/load-runtime-strings.js' );
+
   // Queue all of the preloads to be loaded.
-  preloads.forEach( loadURL );
+  preloads.forEach( preload => loadURL( preload ) );
 
-  loadURL( '../sherpa/lib/require-2.3.6.js', 'js/area-model-decimals-config.js' );
+  // Module loading in compilation-free (development) mode will be kicked off once strings are loaded.
+  // This is done in load-runtime-strings.js
+  window.phet.chipper.loadModules = () => loadURL( 'js/area-model-decimals-main.js', 'module' );
 </script>
 </body>
 </html>
\ No newline at end of file
diff --git a/js/area-model-decimals-config.js b/js/area-model-decimals-config.js
deleted file mode 100644
index 15ed178..0000000
--- a/js/area-model-decimals-config.js
+++ /dev/null
@@ -1,52 +0,0 @@
-// Copyright 2018-2019, University of Colorado Boulder
-
-/*
- * IMPORTANT: This file was auto-generated by "grunt generate-config". Please do not modify this directly. Instead
- * please modify area-model-decimals/package.json to control dependencies.
- *
- * RequireJS configuration file for the area-model-decimals sim.
- * Paths are relative to the location of this file.
- */
-
-require.config( {
-
-  deps: [ 'area-model-decimals-main' ],
-
-  paths: {
-
-    // Third-party libs
-    text: '../../sherpa/lib/text-2.0.12',
-
-    // PhET plugins
-    sound: '../../chipper/js/requirejs-plugins/sound',
-    image: '../../chipper/js/requirejs-plugins/image',
-    mipmap: '../../chipper/js/requirejs-plugins/mipmap',
-    string: '../../chipper/js/requirejs-plugins/string',
-    ifphetio: '../../chipper/js/requirejs-plugins/ifphetio',
-
-    // PhET libs, uppercase names to identify them in require.js imports.
-    // IMPORTANT: DO NOT modify. This file is auto-generated. See documentation at the top.
-    AREA_MODEL_COMMON: '../../area-model-common/js',
-    AREA_MODEL_DECIMALS: '.',
-    AXON: '../../axon/js',
-    BRAND: '../../brand/' + phet.chipper.brand + '/js',
-    DOT: '../../dot/js',
-    JOIST: '../../joist/js',
-    KITE: '../../kite/js',
-    PHETCOMMON: '../../phetcommon/js',
-    PHET_CORE: '../../phet-core/js',
-    PHET_IO: '../../phet-io/js',
-    REPOSITORY: '..',
-    SCENERY: '../../scenery/js',
-    SCENERY_PHET: '../../scenery-phet/js',
-    SUN: '../../sun/js',
-    TAMBO: '../../tambo/js',
-    TANDEM: '../../tandem/js',
-    TWIXT: '../../twixt/js',
-    UTTERANCE_QUEUE: '../../utterance-queue/js',
-    VEGAS: '../../vegas/js'
-  },
-
-  // Cache busting is applied by default, but can be disabled via ?cacheBust=false, see initialize-globals.js
-  urlArgs: phet.chipper.getCacheBustArgs()
-} );
diff --git a/js/area-model-decimals-main.js b/js/area-model-decimals-main.js
index 436a842..656826f 100644
--- a/js/area-model-decimals-main.js
+++ b/js/area-model-decimals-main.js
@@ -5,29 +5,25 @@
  *
  * @author Jonathan Olson <jonathan.olson@colorado.edu>
  */
-define( require => {
-  'use strict';
 
-  // modules
-  const DecimalsScreen = require( 'AREA_MODEL_COMMON/screens/DecimalsScreen' );
-  const Sim = require( 'JOIST/Sim' );
-  const SimLauncher = require( 'JOIST/SimLauncher' );
+import DecimalsScreen from '../../area-model-common/js/screens/DecimalsScreen.js';
+import Sim from '../../joist/js/Sim.js';
+import SimLauncher from '../../joist/js/SimLauncher.js';
+import areaModelDecimalsStrings from './area-model-decimals-strings.js';
 
-  // strings
-  const areaModelDecimalsTitleString = require( 'string!AREA_MODEL_DECIMALS/area-model-decimals.title' );
+const areaModelDecimalsTitleString = areaModelDecimalsStrings[ 'area-model-decimals' ].title;
 
-  const simOptions = {
-    credits: {
-      leadDesign: 'Amy Hanson, Amanda McGarry',
-      softwareDevelopment: 'Jonathan Olson',
-      team: 'Karina Hensberry, Susan Miller, Ariel Paul, Kathy Perkins, Oliver Nix',
-      qualityAssurance: 'Steele Dalton, Bryce Griebenow, Ethan Johnson, Liam Mulhall, Ben Roberts, Jacob Romero, Ethan Ward, Clara Wilson, Kathryn Woessner',
-      graphicArts: 'Mariah Hermsmeyer, Amanda McGarry, Diana L\u00f3pez Tavares'
-    }
-  };
+const simOptions = {
+  credits: {
+    leadDesign: 'Amy Hanson, Amanda McGarry',
+    softwareDevelopment: 'Jonathan Olson',
+    team: 'Karina Hensberry, Susan Miller, Ariel Paul, Kathy Perkins, Oliver Nix',
+    qualityAssurance: 'Steele Dalton, Bryce Griebenow, Ethan Johnson, Liam Mulhall, Ben Roberts, Jacob Romero, Ethan Ward, Clara Wilson, Kathryn Woessner',
+    graphicArts: 'Mariah Hermsmeyer, Amanda McGarry, Diana L\u00f3pez Tavares'
+  }
+};
 
-  SimLauncher.launch( function() {
-    const sim = new Sim( areaModelDecimalsTitleString, [ new DecimalsScreen() ], simOptions );
-    sim.start();
-  } );
-} );
+SimLauncher.launch( function() {
+  const sim = new Sim( areaModelDecimalsTitleString, [ new DecimalsScreen() ], simOptions );
+  sim.start();
+} );
\ No newline at end of file
diff --git a/js/area-model-decimals-strings.js b/js/area-model-decimals-strings.js
new file mode 100644
index 0000000..f40bad3
--- /dev/null
+++ b/js/area-model-decimals-strings.js
@@ -0,0 +1,14 @@
+// Copyright 2020, University of Colorado Boulder
+
+/**
+ * Auto-generated from modulify, DO NOT manually modify.
+ */
+
+import getStringModule from '../../chipper/js/getStringModule.js';
+import areaModelDecimals from './areaModelDecimals.js';
+
+const areaModelDecimalsStrings = getStringModule( 'AREA_MODEL_DECIMALS' );
+
+areaModelDecimals.register( 'areaModelDecimalsStrings', areaModelDecimalsStrings );
+
+export default areaModelDecimalsStrings;
diff --git a/js/areaModelDecimals.js b/js/areaModelDecimals.js
new file mode 100644
index 0000000..47170f7
--- /dev/null
+++ b/js/areaModelDecimals.js
@@ -0,0 +1,10 @@
+// Copyright 2020, University of Colorado Boulder
+
+/**
+ * Creates the namespace for this simulation.
+ */
+
+// modules
+import Namespace from '../../phet-core/js/Namespace.js';
+
+export default new Namespace( 'areaModelDecimals' );