diff --git a/src/openrct2-ui/title/TitleSequencePlayer.cpp b/src/openrct2-ui/title/TitleSequencePlayer.cpp
index fef9dffe3e..d8e525327c 100644
--- a/src/openrct2-ui/title/TitleSequencePlayer.cpp
+++ b/src/openrct2-ui/title/TitleSequencePlayer.cpp
@@ -279,7 +279,7 @@ private:
                 auto parkHandle = TitleSequenceGetParkHandle(*_sequence, saveIndex);
                 if (parkHandle != nullptr)
                 {
-                    loadSuccess = LoadParkFromStream(static_cast<OpenRCT2::IStream*>(parkHandle->Stream), parkHandle->HintPath);
+                    loadSuccess = LoadParkFromStream(parkHandle->Stream.get(), parkHandle->HintPath);
                 }
                 if (!loadSuccess)
                 {
diff --git a/src/openrct2-ui/windows/TitleEditor.cpp b/src/openrct2-ui/windows/TitleEditor.cpp
index fcb0018b22..b99cdd6505 100644
--- a/src/openrct2-ui/windows/TitleEditor.cpp
+++ b/src/openrct2-ui/windows/TitleEditor.cpp
@@ -344,13 +344,12 @@ static void window_title_editor_mouseup(rct_window* w, rct_widgetindex widgetInd
             if (w->selected_list_item >= 0 && w->selected_list_item < static_cast<int16_t>(_editingTitleSequence->Saves.size()))
             {
                 auto handle = TitleSequenceGetParkHandle(*_editingTitleSequence, w->selected_list_item);
-                auto stream = static_cast<OpenRCT2::IStream*>(handle->Stream);
                 bool isScenario = ParkImporter::ExtensionIsScenario(handle->HintPath);
                 try
                 {
                     auto& objectMgr = OpenRCT2::GetContext()->GetObjectManager();
                     auto parkImporter = std::unique_ptr<IParkImporter>(ParkImporter::Create(handle->HintPath));
-                    auto result = parkImporter->LoadFromStream(stream, isScenario);
+                    auto result = parkImporter->LoadFromStream(handle->Stream.get(), isScenario);
                     objectMgr.LoadObjects(result.RequiredObjects.data(), result.RequiredObjects.size());
                     parkImporter->Import();
 
diff --git a/src/openrct2/title/TitleSequence.cpp b/src/openrct2/title/TitleSequence.cpp
index abe9dc119c..ba603ffdfa 100644
--- a/src/openrct2/title/TitleSequence.cpp
+++ b/src/openrct2/title/TitleSequence.cpp
@@ -114,11 +114,11 @@ std::unique_ptr<TitleSequenceParkHandle> TitleSequenceGetParkHandle(TitleSequenc
                 auto data = zip->GetFileData(filename);
                 auto dataForMs = Memory::Allocate<uint8_t>(data.size());
                 std::copy_n(data.data(), data.size(), dataForMs);
-                auto ms = new OpenRCT2::MemoryStream(
+                auto ms = std::make_unique<OpenRCT2::MemoryStream>(
                     dataForMs, data.size(), OpenRCT2::MEMORY_ACCESS::READ | OpenRCT2::MEMORY_ACCESS::OWNER);
 
                 handle = std::make_unique<TitleSequenceParkHandle>();
-                handle->Stream = ms;
+                handle->Stream = std::move(ms);
                 handle->HintPath = filename;
             }
             else
@@ -129,10 +129,10 @@ std::unique_ptr<TitleSequenceParkHandle> TitleSequenceGetParkHandle(TitleSequenc
         else
         {
             auto absolutePath = Path::Combine(seq.Path, filename);
-            OpenRCT2::FileStream* fileStream = nullptr;
+            std::unique_ptr<OpenRCT2::IStream> fileStream = nullptr;
             try
             {
-                fileStream = new OpenRCT2::FileStream(absolutePath, OpenRCT2::FILE_MODE_OPEN);
+                fileStream = std::make_unique<OpenRCT2::FileStream>(absolutePath, OpenRCT2::FILE_MODE_OPEN);
             }
             catch (const IOException& exception)
             {
@@ -142,7 +142,7 @@ std::unique_ptr<TitleSequenceParkHandle> TitleSequenceGetParkHandle(TitleSequenc
             if (fileStream != nullptr)
             {
                 handle = std::make_unique<TitleSequenceParkHandle>();
-                handle->Stream = fileStream;
+                handle->Stream = std::move(fileStream);
                 handle->HintPath = filename;
             }
         }
diff --git a/src/openrct2/title/TitleSequence.h b/src/openrct2/title/TitleSequence.h
index a3f1e23934..d384e25c8f 100644
--- a/src/openrct2/title/TitleSequence.h
+++ b/src/openrct2/title/TitleSequence.h
@@ -11,6 +11,7 @@
 
 #include "../common.h"
 #include "../localisation/Localisation.h"
+#include "../openrct2/core/IStream.hpp"
 
 #include <memory>
 
@@ -54,7 +55,7 @@ struct TitleSequence
 struct TitleSequenceParkHandle
 {
     std::string HintPath;
-    void* Stream;
+    std::unique_ptr<OpenRCT2::IStream> Stream;
 };
 
 enum TITLE_SCRIPT