diff --git a/core/domain/platform_parameter_list.py b/core/domain/platform_parameter_list.py
index 57c94ec0e1b4..bef28d792120 100644
--- a/core/domain/platform_parameter_list.py
+++ b/core/domain/platform_parameter_list.py
@@ -73,3 +73,4 @@ class ParamNames(enum.Enum):
         'unpublish_exploration_email_html_body')
     CD_ADMIN_DASHBOARD_NEW_UI = 'cd_admin_dashboard_new_ui'
     RECORD_PLAYTHROUGH_PROBABILITY = 'record_playthrough_probability'
+    NEW_LESSON_PLAYER = 'new_lesson_player'
diff --git a/core/domain/platform_parameter_list_test.py b/core/domain/platform_parameter_list_test.py
index 97be5a73a6dd..8ff0a10c68a4 100644
--- a/core/domain/platform_parameter_list_test.py
+++ b/core/domain/platform_parameter_list_test.py
@@ -67,7 +67,8 @@ class ExistingPlatformParameterValidityTests(test_utils.GenericTestBase):
                             'show_translation_size',
                             'signup_email_body_content',
                             'signup_email_subject_content',
-                            'unpublish_exploration_email_html_body']
+                            'unpublish_exploration_email_html_body',
+                            'new_lesson_player']
 
     def test_all_defined_parameters_are_valid(self) -> None:
         all_names = (
diff --git a/core/domain/platform_parameter_registry.py b/core/domain/platform_parameter_registry.py
index a682e264b889..53cad808c005 100644
--- a/core/domain/platform_parameter_registry.py
+++ b/core/domain/platform_parameter_registry.py
@@ -458,6 +458,11 @@ def _to_platform_parameter_model(
     'Enable learner groups feature',
     platform_parameter_domain.FeatureStages.PROD)
 
+Registry.create_feature_flag(
+    ParamNames.NEW_LESSON_PLAYER,
+    'This flag is to enable the exploration player redesign.',
+    platform_parameter_domain.FeatureStages.DEV)
+
 Registry.create_platform_parameter(
     ParamNames.PROMO_BAR_ENABLED,
     'Whether the promo bar should be enabled for all users',
diff --git a/core/platform_feature_list.py b/core/platform_feature_list.py
index b979cc37b9ec..aaf675cde61d 100644
--- a/core/platform_feature_list.py
+++ b/core/platform_feature_list.py
@@ -45,7 +45,8 @@
 DEV_FEATURES_LIST = [
     params.ParamNames.SHOW_FEEDBACK_UPDATES_IN_PROFILE_PIC_DROPDOWN,
     params.ParamNames.SHOW_REDESIGNED_LEARNER_DASHBOARD,
-    params.ParamNames.SHOW_TRANSLATION_SIZE
+    params.ParamNames.SHOW_TRANSLATION_SIZE,
+    params.ParamNames.NEW_LESSON_PLAYER
 ]
 
 # Names of features in test stage, the corresponding feature flag instances must
diff --git a/core/templates/domain/platform_feature/feature-status-summary.model.ts b/core/templates/domain/platform_feature/feature-status-summary.model.ts
index 0d285852e5fc..f008ab43ff2e 100644
--- a/core/templates/domain/platform_feature/feature-status-summary.model.ts
+++ b/core/templates/domain/platform_feature/feature-status-summary.model.ts
@@ -38,7 +38,8 @@ export enum FeatureNames {
   ShowRedesignedLearnerDashboard = 'show_redesigned_learner_dashboard',
   IsImprovementsTabEnabled = 'is_improvements_tab_enabled',
   LearnerGroupsAreEnabled = 'learner_groups_are_enabled',
-  CdAdminDashboardNewUi = 'cd_admin_dashboard_new_ui'
+  CdAdminDashboardNewUi = 'cd_admin_dashboard_new_ui',
+  NewLessonPlayer = 'new_lesson_player'
 }
 
 export interface FeatureStatusSummaryBackendDict {