diff --git a/src/OpenRCT2.cpp b/src/OpenRCT2.cpp
index 9f03cf3646..645be04d1b 100644
--- a/src/OpenRCT2.cpp
+++ b/src/OpenRCT2.cpp
@@ -18,8 +18,12 @@
 #include "core/Guard.hpp"
 #include "core/String.hpp"
 #include "network/network.h"
-#include "platform/crash.h"
+#include "object/ObjectRepository.h"
 #include "OpenRCT2.h"
+#include "platform/crash.h"
+#include "PlatformEnvironment.h"
+#include "ride/TrackDesignRepository.h"
+#include "ScenarioRepository.h"
 
 extern "C"
 {
@@ -67,6 +71,7 @@ extern "C"
 
 namespace OpenRCT2
 {
+    static IPlatformEnvironment * _env = nullptr;
     static std::string _versionInfo;
     static bool _isWindowMinimised;
     static uint32 _isWindowMinimisedLastCheckTick;
@@ -76,6 +81,7 @@ namespace OpenRCT2
     /** If set, will end the OpenRCT2 game loop. Intentially private to this module so that the flag can not be set back to false. */
     static bool _finished;
 
+    static void SetupEnvironment();
     static void SetVersionInfoString();
     static bool ShouldRunVariableFrame();
     static void RunGameLoop();
@@ -163,6 +169,19 @@ extern "C"
             return false;
         }
 
+        // Sets up the environment OpenRCT2 is running in, e.g. directory paths
+        OpenRCT2::SetupEnvironment();
+
+        IObjectRepository * objRepo = CreateObjectRepository(OpenRCT2::_env);
+
+        // TODO Ideally we want to delay this until we show the title so that we can
+        //      still open the game window and draw a progress screen for the creation
+        //      of the object cache.
+        objRepo->LoadOrConstruct();
+
+        CreateScenarioRepository(OpenRCT2::_env);
+        GetTrackRepository()->Scan();
+
         if (!gOpenRCT2Headless) {
             audio_init();
             audio_populate_devices();
@@ -294,6 +313,18 @@ extern "C"
 
 namespace OpenRCT2
 {
+    static void SetupEnvironment()
+    {
+        utf8 path[260];
+        std::string basePaths[4];
+        basePaths[(size_t)DIRBASE::RCT2] = std::string(gRCT2AddressAppPath);
+        platform_get_openrct_data_path(path, sizeof(path));
+        basePaths[(size_t)DIRBASE::OPENRCT2] = std::string(path);
+        platform_get_user_directory(path, nullptr, sizeof(path));
+        basePaths[(size_t)DIRBASE::USER] = std::string(path);
+        OpenRCT2::_env = CreatePlatformEnvironment(basePaths);
+    }
+
     static void SetVersionInfoString()
     {
         utf8 buffer[256];
diff --git a/src/PlatformEnvironment.cpp b/src/PlatformEnvironment.cpp
index 23a69eba83..ea585a7f3b 100644
--- a/src/PlatformEnvironment.cpp
+++ b/src/PlatformEnvironment.cpp
@@ -84,15 +84,8 @@ private:
     static const char * FileNames[];
 };
 
-IPlatformEnvironment * CreatePlatformEnvironment()
+IPlatformEnvironment * CreatePlatformEnvironment(const std::string basePaths[4])
 {
-    utf8 path[260];
-    std::string basePaths[4];
-    basePaths[(size_t)DIRBASE::RCT2] = std::string(gRCT2AddressAppPath);
-    platform_get_openrct_data_path(path, sizeof(path));
-    basePaths[(size_t)DIRBASE::OPENRCT2] = std::string(path);
-    platform_get_user_directory(path, nullptr, sizeof(path));
-    basePaths[(size_t)DIRBASE::USER] = std::string(path);
     return new PlatformEnvironment(basePaths);
 }
 
diff --git a/src/PlatformEnvironment.h b/src/PlatformEnvironment.h
index b4afdc1380..751f8ced85 100644
--- a/src/PlatformEnvironment.h
+++ b/src/PlatformEnvironment.h
@@ -70,4 +70,4 @@ interface IPlatformEnvironment
     virtual std::string GetFilePath(PATHID pathid) const abstract;
 };
 
-IPlatformEnvironment * CreatePlatformEnvironment();
+IPlatformEnvironment * CreatePlatformEnvironment(const std::string basePaths[4]);
diff --git a/src/ScenarioRepository.cpp b/src/ScenarioRepository.cpp
index 7ec4250e31..85d17fd016 100644
--- a/src/ScenarioRepository.cpp
+++ b/src/ScenarioRepository.cpp
@@ -550,14 +550,6 @@ IScenarioRepository * CreateScenarioRepository(IPlatformEnvironment * env)
 
 IScenarioRepository * GetScenarioRepository()
 {
-    if (_scenarioRepository == nullptr)
-    {
-        // TODO There should only be one platform environment which needs to be global.
-        //      However it should be not be used here. Instead the object repository should be
-        //      constructed in some initialisation method where it passes this dependency.
-        IPlatformEnvironment * env = CreatePlatformEnvironment();
-        CreateScenarioRepository(env);
-    }
     return _scenarioRepository.get();
 }
 
diff --git a/src/object/ObjectManager.cpp b/src/object/ObjectManager.cpp
index 41346e968c..472b580b04 100644
--- a/src/object/ObjectManager.cpp
+++ b/src/object/ObjectManager.cpp
@@ -42,7 +42,13 @@ private:
 public:
     ObjectManager(IObjectRepository * objectRepository)
     {
+        Guard::ArgumentNotNull(objectRepository);
+
         _objectRepository = objectRepository;
+
+        UpdateLegacyLoadedObjectList();
+        UpdateSceneryGroupIndexes();
+        reset_type_to_ride_entry_index_map();
     }
 
     ~ObjectManager() override
diff --git a/src/object/ObjectRepository.cpp b/src/object/ObjectRepository.cpp
index f6e665517b..6b7c524bec 100644
--- a/src/object/ObjectRepository.cpp
+++ b/src/object/ObjectRepository.cpp
@@ -626,14 +626,6 @@ IObjectRepository * CreateObjectRepository(IPlatformEnvironment * env)
 
 IObjectRepository * GetObjectRepository()
 {
-    if (_objectRepository == nullptr)
-    {
-        // TODO There should only be one platform environment which needs to be global.
-        //      However it should be not be used here. Instead the object repository should be
-        //      constructed in some initialisation method where it passes this dependency.
-        IPlatformEnvironment * env = CreatePlatformEnvironment();
-        CreateObjectRepository(env);
-    }
     return _objectRepository.get();
 }
 
diff --git a/src/rct2.c b/src/rct2.c
index ae9f2daa70..a8cc3d545b 100644
--- a/src/rct2.c
+++ b/src/rct2.c
@@ -171,10 +171,6 @@ bool rct2_init()
 		return false;
 	}
 
-	object_list_load();
-	scenario_repository_scan();
-	track_repository_scan();
-
 	font_sprite_initialise_characters();
 	if (!gOpenRCT2Headless) {
 		platform_init();