diff --git a/blocks/all.js b/blocks/blocks.js
similarity index 58%
rename from blocks/all.js
rename to blocks/blocks.js
index b233bfcd8..f6758c2c5 100644
--- a/blocks/all.js
+++ b/blocks/blocks.js
@@ -10,18 +10,18 @@
  */
 'use strict';
 
-goog.module('Blockly.blocks.all');
+goog.module('Blockly.libraryBlocks');
 goog.module.declareLegacyNamespace();
 
-const colour = goog.require('Blockly.blocks.colour');
-const lists = goog.require('Blockly.blocks.lists');
-const logic = goog.require('Blockly.blocks.logic');
-const loops = goog.require('Blockly.blocks.loops');
-const math = goog.require('Blockly.blocks.math');
-const procedures = goog.require('Blockly.blocks.procedures');
-const texts = goog.require('Blockly.blocks.texts');
-const variables = goog.require('Blockly.blocks.variables');
-const variablesDynamic = goog.require('Blockly.blocks.variablesDynamic');
+const colour = goog.require('Blockly.libraryBlocks.colour');
+const lists = goog.require('Blockly.libraryBlocks.lists');
+const logic = goog.require('Blockly.libraryBlocks.logic');
+const loops = goog.require('Blockly.libraryBlocks.loops');
+const math = goog.require('Blockly.libraryBlocks.math');
+const procedures = goog.require('Blockly.libraryBlocks.procedures');
+const texts = goog.require('Blockly.libraryBlocks.texts');
+const variables = goog.require('Blockly.libraryBlocks.variables');
+const variablesDynamic = goog.require('Blockly.libraryBlocks.variablesDynamic');
 /* eslint-disable-next-line no-unused-vars */
 const {BlockDefinition} = goog.requireType('Blockly.blocks');
 
@@ -38,7 +38,7 @@ exports.variablesDynamic = variablesDynamic;
 
 /**
  * A dictionary of the block definitions provided by all the
- * Blockly.blocks.* modules.
+ * Blockly.libraryBlocks.* modules.
  * @type {!Object<string, !BlockDefinition>}
  */
 const blocks = Object.assign(
diff --git a/blocks/colour.js b/blocks/colour.js
index abf7347e1..91b82a282 100644
--- a/blocks/colour.js
+++ b/blocks/colour.js
@@ -9,7 +9,7 @@
  */
 'use strict';
 
-goog.module('Blockly.blocks.colour');
+goog.module('Blockly.libraryBlocks.colour');
 
 /* eslint-disable-next-line no-unused-vars */
 const {BlockDefinition} = goog.requireType('Blockly.blocks');
diff --git a/blocks/lists.js b/blocks/lists.js
index dbb6b2aa4..46975d6cd 100644
--- a/blocks/lists.js
+++ b/blocks/lists.js
@@ -10,7 +10,7 @@
  */
 'use strict';
 
-goog.module('Blockly.blocks.lists');
+goog.module('Blockly.libraryBlocks.lists');
 
 const xmlUtils = goog.require('Blockly.utils.xml');
 const {Align} = goog.require('Blockly.Input');
diff --git a/blocks/logic.js b/blocks/logic.js
index f7428ca19..04e1572be 100644
--- a/blocks/logic.js
+++ b/blocks/logic.js
@@ -10,7 +10,7 @@
  */
 'use strict';
 
-goog.module('Blockly.blocks.logic');
+goog.module('Blockly.libraryBlocks.logic');
 
 /* eslint-disable-next-line no-unused-vars */
 const AbstractEvent = goog.requireType('Blockly.Events.Abstract');
diff --git a/blocks/loops.js b/blocks/loops.js
index 7ac0228e2..e6772c82e 100644
--- a/blocks/loops.js
+++ b/blocks/loops.js
@@ -10,7 +10,7 @@
  */
 'use strict';
 
-goog.module('Blockly.blocks.loops');
+goog.module('Blockly.libraryBlocks.loops');
 
 /* eslint-disable-next-line no-unused-vars */
 const AbstractEvent = goog.requireType('Blockly.Events.Abstract');
@@ -297,9 +297,12 @@ Extensions.register(
  * loopTypes.add('custom_loop');
  *
  * // Else if using Closure Compiler and goog.modules:
- * const {loopTypes} = goog.require('Blockly.blocks.loops');
+ * const {loopTypes} = goog.require('Blockly.libraryBlocks.loops');
  * loopTypes.add('custom_loop');
  *
+ * // Else if using blockly_compressed + blockss_compressed.js in browser:
+ * Blockly.libraryBlocks.loopTypes.add('custom_loop');
+ *
  * @type {!Set<string>}
  */
 const loopTypes = new Set([
diff --git a/blocks/math.js b/blocks/math.js
index a5143ba99..bd5458fdd 100644
--- a/blocks/math.js
+++ b/blocks/math.js
@@ -10,7 +10,7 @@
  */
 'use strict';
 
-goog.module('Blockly.blocks.math');
+goog.module('Blockly.libraryBlocks.math');
 
 const Extensions = goog.require('Blockly.Extensions');
 // N.B.: Blockly.FieldDropdown needed for type AND side-effects.
diff --git a/blocks/procedures.js b/blocks/procedures.js
index cf5553a82..eed3a718b 100644
--- a/blocks/procedures.js
+++ b/blocks/procedures.js
@@ -10,7 +10,7 @@
  */
 'use strict';
 
-goog.module('Blockly.blocks.procedures');
+goog.module('Blockly.libraryBlocks.procedures');
 
 /* eslint-disable-next-line no-unused-vars */
 const AbstractEvent = goog.requireType('Blockly.Events.Abstract');
diff --git a/blocks/text.js b/blocks/text.js
index decefb53e..efaebb500 100644
--- a/blocks/text.js
+++ b/blocks/text.js
@@ -10,7 +10,7 @@
  */
 'use strict';
 
-goog.module('Blockly.blocks.texts');
+goog.module('Blockly.libraryBlocks.texts');
 
 const Extensions = goog.require('Blockly.Extensions');
 const {Msg} = goog.require('Blockly.Msg');
diff --git a/blocks/variables.js b/blocks/variables.js
index 8875f287a..56a7b5eb8 100644
--- a/blocks/variables.js
+++ b/blocks/variables.js
@@ -10,7 +10,7 @@
  */
 'use strict';
 
-goog.module('Blockly.blocks.variables');
+goog.module('Blockly.libraryBlocks.variables');
 
 const ContextMenu = goog.require('Blockly.ContextMenu');
 const Extensions = goog.require('Blockly.Extensions');
diff --git a/blocks/variables_dynamic.js b/blocks/variables_dynamic.js
index 3360d978e..6020c7859 100644
--- a/blocks/variables_dynamic.js
+++ b/blocks/variables_dynamic.js
@@ -10,7 +10,7 @@
  */
 'use strict';
 
-goog.module('Blockly.blocks.variablesDynamic');
+goog.module('Blockly.libraryBlocks.variablesDynamic');
 
 /* eslint-disable-next-line no-unused-vars */
 const AbstractEvent = goog.requireType('Blockly.Events.Abstract');
diff --git a/scripts/gulpfiles/build_tasks.js b/scripts/gulpfiles/build_tasks.js
index 4178b04bf..5119ba0af 100644
--- a/scripts/gulpfiles/build_tasks.js
+++ b/scripts/gulpfiles/build_tasks.js
@@ -80,7 +80,7 @@ const NAMESPACE_OBJECT = '$';
  * - .importAs: the name that this chunk's exports object will be
  *   given when passed to the factory function of other chunks that
  *   depend on it.  (Needs to be distinct from .exports since (e.g.)
- *   "Blockly.blocks.all" is not a valid variable name.)
+ *   "Blockly.libraryBlocks" is not a valid variable name.)
  * - .factoryPreamble: code to override the default wrapper factory
  *   function preamble.
  * - .factoryPostamble: code to override the default wrapper factory
@@ -107,9 +107,9 @@ const chunks = [
   },
   {
     name: 'blocks',
-    entry: 'blocks/all.js',
-    exports: 'Blockly.blocks.all',
-    importAs: 'BlocklyBlocks',
+    entry: 'blocks/blocks.js',
+    exports: 'Blockly.libraryBlocks',
+    importAs: 'libraryBlocks',
   },
   {
     name: 'javascript',
diff --git a/scripts/gulpfiles/chunks.json b/scripts/gulpfiles/chunks.json
index f817e0af8..4f80d1dce 100644
--- a/scripts/gulpfiles/chunks.json
+++ b/scripts/gulpfiles/chunks.json
@@ -1,12 +1,12 @@
 {
   "chunk": [
     "blockly:259",
-    "all:10:blockly",
+    "blocks:10:blockly",
+    "all:11:blockly",
     "all1:11:blockly",
     "all2:11:blockly",
     "all3:11:blockly",
-    "all4:11:blockly",
-    "all5:11:blockly"
+    "all4:11:blockly"
   ],
   "js": [
     "./core/inject.js",
@@ -80,11 +80,9 @@
     "./core/utils/math.js",
     "./core/utils/array.js",
     "./core/workspace.js",
-    "./core/events/events_block_delete.js",
     "./core/keyboard_nav/basic_cursor.js",
     "./core/keyboard_nav/tab_navigate_cursor.js",
     "./core/warning.js",
-    "./core/events/events_bubble_open.js",
     "./core/comment.js",
     "./core/events/events_block_drag.js",
     "./core/events/events_block_move.js",
@@ -99,21 +97,22 @@
     "./core/zoom_controls.js",
     "./core/workspace_drag_surface_svg.js",
     "./core/events/events_selected.js",
-    "./core/events/events_comment_move.js",
-    "./core/events/events_comment_delete.js",
-    "./core/events/events_comment_create.js",
-    "./core/events/events_comment_base.js",
-    "./core/events/events_comment_change.js",
-    "./core/workspace_comment.js",
     "./core/interfaces/i_movable.js",
     "./core/interfaces/i_selectable.js",
     "./core/interfaces/i_copyable.js",
+    "./core/events/events_comment_delete.js",
+    "./core/events/events_comment_change.js",
+    "./core/workspace_comment.js",
+    "./core/events/events_comment_create.js",
+    "./core/events/events_comment_base.js",
+    "./core/events/events_comment_move.js",
     "./core/workspace_comment_svg.js",
     "./core/workspace_audio.js",
     "./core/events/events_trashcan_open.js",
     "./core/sprites.js",
     "./core/drag_target.js",
     "./core/delete_area.js",
+    "./core/events/events_block_delete.js",
     "./core/positionable_helpers.js",
     "./core/trashcan.js",
     "./core/touch_gesture.js",
@@ -197,7 +196,6 @@
     "./core/events/events_var_delete.js",
     "./core/variable_map.js",
     "./core/names.js",
-    "./core/events/events_ui_base.js",
     "./core/events/events_marker_move.js",
     "./core/renderers/common/marker_svg.js",
     "./core/keyboard_nav/marker.js",
@@ -226,6 +224,8 @@
     "./core/utils/svg_paths.js",
     "./core/renderers/common/constants.js",
     "./core/field.js",
+    "./core/events/events_ui_base.js",
+    "./core/events/events_bubble_open.js",
     "./core/procedures.js",
     "./core/workspace_svg.js",
     "./core/utils/rect.js",
@@ -277,7 +277,7 @@
     "./blocks/logic.js",
     "./blocks/lists.js",
     "./blocks/colour.js",
-    "./blocks/all.js",
+    "./blocks/blocks.js",
     "./generators/javascript/variables_dynamic.js",
     "./generators/javascript/variables.js",
     "./generators/javascript/text.js",
diff --git a/scripts/migration/renamings.js b/scripts/migration/renamings.js
index 4c2c584ba..e148a97ce 100644
--- a/scripts/migration/renamings.js
+++ b/scripts/migration/renamings.js
@@ -1043,6 +1043,36 @@ const renamings = {
         },
       },
     },
+    'Blockly.blocks.all': {
+      module: 'Blockly.libraryBlocks',
+    },
+    'Blockly.blocks.colour': {
+      module: 'Blockly.libraryBlocks.colour',
+    },
+    'Blockly.blocks.lists': {
+      module: 'Blockly.libraryBlocks.lists',
+    },
+    'Blockly.blocks.logic': {
+      module: 'Blockly.libraryBlocks.logic',
+    },
+    'Blockly.blocks.loops': {
+      module: 'Blockly.libraryBlocks.loops',
+    },
+    'Blockly.blocks.math': {
+      module: 'Blockly.libraryBlocks.math',
+    },
+    'Blockly.blocks.procedures': {
+      module: 'Blockly.libraryBlocks.procedures',
+    },
+    'Blockly.blocks.text': {
+      module: 'Blockly.libraryBlocks.text',
+    },
+    'Blockly.blocks.variables': {
+      module: 'Blockly.libraryBlocks.variables',
+    },
+    'Blockly.blocks.variablesDynamic': {
+      module: 'Blockly.libraryBlocks.variablesDynamic',
+    },
   },
 };
 
diff --git a/tests/compile/main.js b/tests/compile/main.js
index f7ab99e7a..586f4ce36 100644
--- a/tests/compile/main.js
+++ b/tests/compile/main.js
@@ -11,8 +11,8 @@ goog.require('Blockly');
 goog.require('Blockly.geras.Renderer');
 goog.require('Blockly.VerticalFlyout');
 // Blocks
-goog.require('Blockly.blocks.all');
-goog.require('Blockly.blocks.testBlocks');
+goog.require('Blockly.libraryBlocks');
+goog.require('Blockly.libraryBlocks.testBlocks');
 
 Main.init = function() {
   Blockly.inject('blocklyDiv', {
diff --git a/tests/compile/test_blocks.js b/tests/compile/test_blocks.js
index 9cf7efd68..2b8cc6621 100644
--- a/tests/compile/test_blocks.js
+++ b/tests/compile/test_blocks.js
@@ -9,7 +9,7 @@
  */
 'use strict';
 
-goog.provide('Blockly.blocks.testBlocks');
+goog.provide('Blockly.libraryBlocks.testBlocks');
 
 goog.require('Blockly');
 
diff --git a/tests/deps.js b/tests/deps.js
index 3631d4ff3..19b5c7257 100644
--- a/tests/deps.js
+++ b/tests/deps.js
@@ -1,13 +1,13 @@
-goog.addDependency('../../blocks/all.js', ['Blockly.blocks.all'], ['Blockly.blocks.colour', 'Blockly.blocks.lists', 'Blockly.blocks.logic', 'Blockly.blocks.loops', 'Blockly.blocks.math', 'Blockly.blocks.procedures', 'Blockly.blocks.texts', 'Blockly.blocks.variables', 'Blockly.blocks.variablesDynamic'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../blocks/colour.js', ['Blockly.blocks.colour'], ['Blockly.FieldColour', 'Blockly.common'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../blocks/lists.js', ['Blockly.blocks.lists'], ['Blockly.ConnectionType', 'Blockly.FieldDropdown', 'Blockly.FieldDropdown', 'Blockly.Input', 'Blockly.Msg', 'Blockly.Mutator', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../blocks/logic.js', ['Blockly.blocks.logic'], ['Blockly.Events', 'Blockly.Extensions', 'Blockly.FieldDropdown', 'Blockly.FieldLabel', 'Blockly.Msg', 'Blockly.Mutator', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../blocks/loops.js', ['Blockly.blocks.loops'], ['Blockly.ContextMenu', 'Blockly.Events', 'Blockly.Extensions', 'Blockly.FieldDropdown', 'Blockly.FieldLabel', 'Blockly.FieldNumber', 'Blockly.FieldVariable', 'Blockly.Msg', 'Blockly.Variables', 'Blockly.Warning', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../blocks/math.js', ['Blockly.blocks.math'], ['Blockly.Extensions', 'Blockly.FieldDropdown', 'Blockly.FieldLabel', 'Blockly.FieldNumber', 'Blockly.FieldVariable', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../blocks/procedures.js', ['Blockly.blocks.procedures'], ['Blockly.Comment', 'Blockly.ContextMenu', 'Blockly.Events', 'Blockly.FieldCheckbox', 'Blockly.FieldLabel', 'Blockly.FieldTextInput', 'Blockly.Input', 'Blockly.Msg', 'Blockly.Mutator', 'Blockly.Names', 'Blockly.Procedures', 'Blockly.Variables', 'Blockly.Warning', 'Blockly.Xml', 'Blockly.common', 'Blockly.config', 'Blockly.utils.xml'], {'lang': 'es9', 'module': 'goog'});
-goog.addDependency('../../blocks/text.js', ['Blockly.blocks.texts'], ['Blockly.ConnectionType', 'Blockly.Extensions', 'Blockly.FieldDropdown', 'Blockly.FieldImage', 'Blockly.FieldMultilineInput', 'Blockly.FieldTextInput', 'Blockly.FieldVariable', 'Blockly.Input', 'Blockly.Msg', 'Blockly.Mutator', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es9', 'module': 'goog'});
-goog.addDependency('../../blocks/variables.js', ['Blockly.blocks.variables'], ['Blockly.ContextMenu', 'Blockly.Extensions', 'Blockly.FieldLabel', 'Blockly.FieldVariable', 'Blockly.Msg', 'Blockly.Variables', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
-goog.addDependency('../../blocks/variables_dynamic.js', ['Blockly.blocks.variablesDynamic'], ['Blockly.ContextMenu', 'Blockly.Extensions', 'Blockly.FieldLabel', 'Blockly.FieldVariable', 'Blockly.Msg', 'Blockly.Variables', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../blocks/blocks.js', ['Blockly.libraryBlocks'], ['Blockly.libraryBlocks.colour', 'Blockly.libraryBlocks.lists', 'Blockly.libraryBlocks.logic', 'Blockly.libraryBlocks.loops', 'Blockly.libraryBlocks.math', 'Blockly.libraryBlocks.procedures', 'Blockly.libraryBlocks.texts', 'Blockly.libraryBlocks.variables', 'Blockly.libraryBlocks.variablesDynamic'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../blocks/colour.js', ['Blockly.libraryBlocks.colour'], ['Blockly.FieldColour', 'Blockly.common'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../blocks/lists.js', ['Blockly.libraryBlocks.lists'], ['Blockly.ConnectionType', 'Blockly.FieldDropdown', 'Blockly.FieldDropdown', 'Blockly.Input', 'Blockly.Msg', 'Blockly.Mutator', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../blocks/logic.js', ['Blockly.libraryBlocks.logic'], ['Blockly.Events', 'Blockly.Extensions', 'Blockly.FieldDropdown', 'Blockly.FieldLabel', 'Blockly.Msg', 'Blockly.Mutator', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../blocks/loops.js', ['Blockly.libraryBlocks.loops'], ['Blockly.ContextMenu', 'Blockly.Events', 'Blockly.Extensions', 'Blockly.FieldDropdown', 'Blockly.FieldLabel', 'Blockly.FieldNumber', 'Blockly.FieldVariable', 'Blockly.Msg', 'Blockly.Variables', 'Blockly.Warning', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../blocks/math.js', ['Blockly.libraryBlocks.math'], ['Blockly.Extensions', 'Blockly.FieldDropdown', 'Blockly.FieldLabel', 'Blockly.FieldNumber', 'Blockly.FieldVariable', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../blocks/procedures.js', ['Blockly.libraryBlocks.procedures'], ['Blockly.Comment', 'Blockly.ContextMenu', 'Blockly.Events', 'Blockly.FieldCheckbox', 'Blockly.FieldLabel', 'Blockly.FieldTextInput', 'Blockly.Input', 'Blockly.Msg', 'Blockly.Mutator', 'Blockly.Names', 'Blockly.Procedures', 'Blockly.Variables', 'Blockly.Warning', 'Blockly.Xml', 'Blockly.common', 'Blockly.config', 'Blockly.utils.xml'], {'lang': 'es9', 'module': 'goog'});
+goog.addDependency('../../blocks/text.js', ['Blockly.libraryBlocks.texts'], ['Blockly.ConnectionType', 'Blockly.Extensions', 'Blockly.FieldDropdown', 'Blockly.FieldImage', 'Blockly.FieldMultilineInput', 'Blockly.FieldTextInput', 'Blockly.FieldVariable', 'Blockly.Input', 'Blockly.Msg', 'Blockly.Mutator', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es9', 'module': 'goog'});
+goog.addDependency('../../blocks/variables.js', ['Blockly.libraryBlocks.variables'], ['Blockly.ContextMenu', 'Blockly.Extensions', 'Blockly.FieldLabel', 'Blockly.FieldVariable', 'Blockly.Msg', 'Blockly.Variables', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
+goog.addDependency('../../blocks/variables_dynamic.js', ['Blockly.libraryBlocks.variablesDynamic'], ['Blockly.ContextMenu', 'Blockly.Extensions', 'Blockly.FieldLabel', 'Blockly.FieldVariable', 'Blockly.Msg', 'Blockly.Variables', 'Blockly.common', 'Blockly.utils.xml'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/block.js', ['Blockly.Block'], ['Blockly.ASTNode', 'Blockly.Connection', 'Blockly.ConnectionType', 'Blockly.Events.BlockChange', 'Blockly.Events.BlockCreate', 'Blockly.Events.BlockDelete', 'Blockly.Events.BlockMove', 'Blockly.Events.utils', 'Blockly.Extensions', 'Blockly.IASTNodeLocation', 'Blockly.IDeletable', 'Blockly.Input', 'Blockly.Tooltip', 'Blockly.blocks', 'Blockly.common', 'Blockly.constants', 'Blockly.fieldRegistry', 'Blockly.inputTypes', 'Blockly.utils.Coordinate', 'Blockly.utils.Size', 'Blockly.utils.array', 'Blockly.utils.idGenerator', 'Blockly.utils.object', 'Blockly.utils.parsing'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/block_animations.js', ['Blockly.blockAnimations'], ['Blockly.utils.Svg', 'Blockly.utils.dom'], {'lang': 'es6', 'module': 'goog'});
 goog.addDependency('../../core/block_drag_surface.js', ['Blockly.BlockDragSurfaceSvg'], ['Blockly.utils.Coordinate', 'Blockly.utils.Svg', 'Blockly.utils.dom', 'Blockly.utils.svgMath'], {'lang': 'es6', 'module': 'goog'});
diff --git a/tests/generators/index.html b/tests/generators/index.html
index b258ad18d..9e37f05b6 100644
--- a/tests/generators/index.html
+++ b/tests/generators/index.html
@@ -13,7 +13,7 @@ goog.require('Blockly.JavaScript.all');
 goog.require('Blockly.Lua.all');
 goog.require('Blockly.PHP.all');
 goog.require('Blockly.Python.all');
-goog.require('Blockly.blocks.all');
+goog.require('Blockly.libraryBlocks');
 </script>
 <script src="unittest_javascript.js"></script>
 <script src="unittest_python.js"></script>
diff --git a/tests/mocha/index.html b/tests/mocha/index.html
index b054c4af8..7d734de53 100644
--- a/tests/mocha/index.html
+++ b/tests/mocha/index.html
@@ -43,15 +43,15 @@
       goog.require('Blockly.PHP.texts');
       goog.require('Blockly.Python');
       goog.require('Blockly.Python.texts');
-      goog.require('Blockly.blocks.colour');
-      goog.require('Blockly.blocks.logic');
-      goog.require('Blockly.blocks.lists');
-      goog.require('Blockly.blocks.loops');
-      goog.require('Blockly.blocks.math');
-      goog.require('Blockly.blocks.procedures');
-      goog.require('Blockly.blocks.texts');
-      goog.require('Blockly.blocks.variables');
-      goog.require('Blockly.blocks.variablesDynamic');
+      goog.require('Blockly.libraryBlocks.colour');
+      goog.require('Blockly.libraryBlocks.logic');
+      goog.require('Blockly.libraryBlocks.lists');
+      goog.require('Blockly.libraryBlocks.loops');
+      goog.require('Blockly.libraryBlocks.math');
+      goog.require('Blockly.libraryBlocks.procedures');
+      goog.require('Blockly.libraryBlocks.texts');
+      goog.require('Blockly.libraryBlocks.variables');
+      goog.require('Blockly.libraryBlocks.variablesDynamic');
 
       // Run tests.
       goog.require('Blockly.test.astNode');
diff --git a/tests/playgrounds/advanced_playground.html b/tests/playgrounds/advanced_playground.html
index e5279d74c..d322bc0e0 100644
--- a/tests/playgrounds/advanced_playground.html
+++ b/tests/playgrounds/advanced_playground.html
@@ -18,12 +18,12 @@ goog.require('Blockly.Themes.Zelos');
 
 // Other.
 goog.require('Blockly.WorkspaceCommentSvg');
+goog.require('Blockly.libraryBlocks');
 goog.require('Blockly.Dart.all');
 goog.require('Blockly.JavaScript.all');
 goog.require('Blockly.Lua.all');
 goog.require('Blockly.PHP.all');
 goog.require('Blockly.Python.all');
-goog.require('Blockly.blocks.all');
 </script>
 <script>
 'use strict';
diff --git a/tests/playgrounds/load_all.js b/tests/playgrounds/load_all.js
index a444e8cd3..5eaa65e03 100644
--- a/tests/playgrounds/load_all.js
+++ b/tests/playgrounds/load_all.js
@@ -31,23 +31,23 @@ if ((location.hostname === 'localhost' || location.hostname === '127.0.0.1' ||
       `<script src="../node_modules/@blockly/block-test/dist/index.js"></script>`);
   document.write(`<script>
                 // Custom requires for the playground.
+                goog.require('Blockly.libraryBlocks');
                 goog.require('Blockly.Dart.all');
                 goog.require('Blockly.JavaScript.all');
                 goog.require('Blockly.Lua.all');
                 goog.require('Blockly.PHP.all');
                 goog.require('Blockly.Python.all');
                 goog.require('Blockly.WorkspaceCommentSvg');
-                goog.require('Blockly.blocks.all');
             </script>`);
 } else {
   document.write(
       `<script src="../blockly_compressed.js" id="blockly-compressed-script"></script>`);
+  document.write(`<script src="../blocks_compressed.js"></script>`);
   document.write(`<script src="../dart_compressed.js"></script>`);
   document.write(`<script src="../javascript_compressed.js"></script>`);
   document.write(`<script src="../lua_compressed.js"></script>`);
   document.write(`<script src="../php_compressed.js"></script>`);
   document.write(`<script src="../python_compressed.js"></script>`);
-  document.write(`<script src="../blocks_compressed.js"></script>`);
   document.write(`<script src="../msg/messages.js"></script>`);
 }
 })();
diff --git a/tests/playgrounds/prepare.js b/tests/playgrounds/prepare.js
index a077cc533..8b9d534cb 100644
--- a/tests/playgrounds/prepare.js
+++ b/tests/playgrounds/prepare.js
@@ -55,7 +55,7 @@
             goog.bootstrap(
                 [
                   'Blockly',
-                  'Blockly.blocks.all',
+                  'Blockly.libraryBlocks',
                   'Blockly.Dart.all',
                   'Blockly.JavaScript.all',
                   'Blockly.Lua.all',
@@ -74,12 +74,12 @@
 
     // Load blockly_compressed.js et al. using <script> tags.
     document.write('<script src="../../blockly_compressed.js"></script>');
+    document.write('<script src="../../msg/messages.js"></script>');
+    document.write('<script src="../../blocks_compressed.js"></script>');
     document.write('<script src="../../dart_compressed.js"></script>');
     document.write('<script src="../../javascript_compressed.js"></script>');
     document.write('<script src="../../lua_compressed.js"></script>');
     document.write('<script src="../../php_compressed.js"></script>');
     document.write('<script src="../../python_compressed.js"></script>');
-    document.write('<script src="../../blocks_compressed.js"></script>');
-    document.write('<script src="../../msg/messages.js"></script>');
   }
 })();