diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index d3437faccd..98d81b1f75 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -1,5 +1,6 @@
 0.3.2+ (in development)
 ------------------------------------------------------------------------
+- Feature: [#13057] Make GameAction flags accessible by plugins.
 - Change: [#13346] Change FootpathScenery to FootpathAddition in all occurrences
 - Fix: [#13334] Uninitialised variables in CustomTabDesc
 - Fix: [#13342] Rename tabChange to onTabChange in WindowDesc interface
diff --git a/src/openrct2/actions/GameAction.h b/src/openrct2/actions/GameAction.h
index a8064c5b96..0f9b6d9c99 100644
--- a/src/openrct2/actions/GameAction.h
+++ b/src/openrct2/actions/GameAction.h
@@ -233,6 +233,11 @@ public:
     {
     }
 
+    void AcceptFlags(GameActionParameterVisitor& visitor)
+    {
+        visitor.Visit("flags", _flags);
+    }
+
     NetworkPlayerId_t GetPlayer() const
     {
         return _playerId;
diff --git a/src/openrct2/scripting/ScriptEngine.cpp b/src/openrct2/scripting/ScriptEngine.cpp
index 05eb3bb682..59c7b8addd 100644
--- a/src/openrct2/scripting/ScriptEngine.cpp
+++ b/src/openrct2/scripting/ScriptEngine.cpp
@@ -43,7 +43,7 @@
 using namespace OpenRCT2;
 using namespace OpenRCT2::Scripting;
 
-static constexpr int32_t OPENRCT2_PLUGIN_API_VERSION = 8;
+static constexpr int32_t OPENRCT2_PLUGIN_API_VERSION = 9;
 
 struct ExpressionStringifier final
 {
@@ -1090,6 +1090,7 @@ void ScriptEngine::RunGameActionHooks(const GameAction& action, std::unique_ptr<
             DukObject args(_context);
             DukFromGameActionParameterVisitor visitor(args);
             const_cast<GameAction&>(action).AcceptParameters(visitor);
+            const_cast<GameAction&>(action).AcceptFlags(visitor);
             obj.Set("args", args.Take());
         }
 
@@ -1129,6 +1130,7 @@ std::unique_ptr<GameAction> ScriptEngine::CreateGameAction(const std::string& ac
         DukValue argsCopy = args;
         DukToGameActionParameterVisitor visitor(std::move(argsCopy));
         action->AcceptParameters(visitor);
+        action->AcceptFlags(visitor);
         return action;
     }
     else