diff --git a/hecl/include/hecl/CVarManager.hpp b/hecl/include/hecl/CVarManager.hpp
index 292ef3179..b2026b562 100644
--- a/hecl/include/hecl/CVarManager.hpp
+++ b/hecl/include/hecl/CVarManager.hpp
@@ -16,6 +16,7 @@ extern CVar* com_developer;
 extern CVar* com_configfile;
 extern CVar* com_enableCheats;
 extern CVar* com_cubemaps;
+extern CVar* com_variableDt;
 class CVarManager final {
   using CVarContainer = DNACVAR::CVarContainer;
   template <typename T>
@@ -105,6 +106,7 @@ public:
 
   void setDeveloperMode(bool v, bool setDeserialized = false);
   void setCheatsEnabled(bool v, bool setDeserialized = false);
+  void setVariableDtEnabled(bool v, bool setDeserialized = false);
   bool restartRequired() const;
 
   void parseCommandLine(const std::vector<SystemString>& args);
diff --git a/hecl/lib/CVarManager.cpp b/hecl/lib/CVarManager.cpp
index 860abcd37..5f52b1836 100644
--- a/hecl/lib/CVarManager.cpp
+++ b/hecl/lib/CVarManager.cpp
@@ -17,6 +17,7 @@ CVar* com_developer = nullptr;
 CVar* com_configfile = nullptr;
 CVar* com_enableCheats = nullptr;
 CVar* com_cubemaps = nullptr;
+CVar* com_variableDt = nullptr;
 
 static const std::regex cmdLineRegex("\\+([\\w\\.]+)=([\\w\\.\\-]+)");
 CVarManager* CVarManager::m_instance = nullptr;
@@ -35,6 +36,8 @@ CVarManager::CVarManager(hecl::Runtime::FileStoreManager& store, bool useBinary)
       (CVar::EFlags::System | CVar::EFlags::ReadOnly | CVar::EFlags::Hidden | CVar::EFlags::InternalArchivable));
   com_cubemaps = newCVar("cubemaps", "Enable cubemaps", false,
                          (CVar::EFlags::Game | CVar::EFlags::ReadOnly | CVar::EFlags::InternalArchivable));
+  com_variableDt = newCVar("variableDt", "Enable variable delta time (experimental)", false,
+                           (CVar::EFlags::Game | CVar::EFlags::ReadOnly | CVar::EFlags::InternalArchivable));
 }
 
 CVarManager::~CVarManager() {}
@@ -276,6 +279,15 @@ void CVarManager::setCheatsEnabled(bool v, bool setDeserialized) {
   com_enableCheats->setModified();
 }
 
+void CVarManager::setVariableDtEnabled(bool v, bool setDeserialized) {
+  com_variableDt->unlock();
+  com_variableDt->fromBoolean(v);
+  if (setDeserialized)
+    com_variableDt->m_wasDeserialized = true;
+  com_variableDt->lock();
+  com_variableDt->setModified();
+}
+
 bool CVarManager::restartRequired() const {
   return std::any_of(m_cvars.cbegin(), m_cvars.cend(), [](const auto& entry) {
     return entry.second->isModified() && entry.second->modificationRequiresRestart();