diff --git a/deps/nostalgia/src/olympic/turbine/include/turbine/context.hpp b/deps/nostalgia/src/olympic/turbine/include/turbine/context.hpp
index 557e7b9..45cc5d0 100644
--- a/deps/nostalgia/src/olympic/turbine/include/turbine/context.hpp
+++ b/deps/nostalgia/src/olympic/turbine/include/turbine/context.hpp
@@ -37,15 +37,78 @@ inline ox::FileSystem *rom(Context &ctx) noexcept {
 	return keelCtx(ctx).rom.get();
 }
 
-void setApplicationData(Context &ctx, void *applicationData) noexcept;
+struct WrapBase {
+	virtual ~WrapBase() = default;
+	virtual WrapBase *copyTo(ox::Span<char> s) noexcept = 0;
+	virtual operator bool() const noexcept = 0;
+};
+
+template<typename T>
+struct Wrap: public WrapBase {
+	T *data{};
+	Wrap(T *pData) noexcept: data(pData) {
+	}
+	WrapBase *copyTo(ox::Span<char> s) noexcept override {
+		oxAssert(s.size() >= sizeof(Wrap), "too small buffer");
+		return new(s.data()) Wrap{data};
+	}
+	operator bool() const noexcept override {
+		return data != nullptr;
+	}
+};
+
+class WrapPtr {
+	private:
+		WrapBase *m_wrapPtr{};
+		ox::Array<char, sizeof(Wrap<void*>)> m_wrapData;
+	public:
+		template<typename T>
+		inline WrapPtr &operator=(T *ptr) noexcept {
+			m_wrapPtr = new(m_wrapData.data()) Wrap(ptr);
+			return *this;
+		}
+		inline WrapPtr &operator=(WrapBase &ptr) noexcept {
+			if (ptr) {
+				m_wrapPtr = ptr.copyTo(m_wrapData);
+			} else {
+				m_wrapPtr = nullptr;
+			}
+			return *this;
+		}
+		inline operator bool() const noexcept {
+			return m_wrapPtr && *m_wrapPtr;
+		}
+		[[nodiscard]]
+		inline WrapBase *getWrapBase() const noexcept {
+			return m_wrapPtr;
+		}
+};
+
+void setApplicationDataRaw(Context &ctx, WrapBase &applicationData) noexcept;
+
+template<typename T>
+void setApplicationData(Context &ctx, T *applicationData) noexcept {
+	Wrap w(applicationData);
+	setApplicationDataRaw(ctx, w);
+}
 
 [[nodiscard]]
-void *applicationDataRaw(Context &ctx) noexcept;
+WrapBase *applicationDataRaw(Context &ctx) noexcept;
 
 template<typename T>
 [[nodiscard]]
 T *applicationData(Context &ctx) noexcept {
-	return static_cast<T*>(applicationDataRaw(ctx));
+	auto const raw = applicationDataRaw(ctx);
+	if (!raw) [[unlikely]] {
+		return nullptr;
+	}
+#ifdef OX_BARE_METAL
+	auto const out = static_cast<Wrap<T>*>(raw);
+#else
+	auto const out = dynamic_cast<Wrap<T>*>(raw);
+#endif
+	oxAssert(out, "Cast failed - wrong type");
+	return out->data;
 }
 
 void setKeyEventHandler(Context &ctx, KeyEventHandler h) noexcept;
diff --git a/deps/nostalgia/src/olympic/turbine/src/gba/context.cpp b/deps/nostalgia/src/olympic/turbine/src/gba/context.cpp
index c1ce23c..5b5f133 100644
--- a/deps/nostalgia/src/olympic/turbine/src/gba/context.cpp
+++ b/deps/nostalgia/src/olympic/turbine/src/gba/context.cpp
@@ -18,12 +18,12 @@ keel::Context &keelCtx(Context &ctx) noexcept {
 	return ctx.keelCtx;
 }
 
-void setApplicationData(Context &ctx, void *applicationData) noexcept {
+void setApplicationDataRaw(Context &ctx, WrapBase &applicationData) noexcept {
 	ctx.applicationData = applicationData;
 }
 
-void *applicationDataRaw(Context &ctx) noexcept {
-	return ctx.applicationData;
+WrapBase *applicationDataRaw(Context &ctx) noexcept {
+	return ctx.applicationData.getWrapBase();
 }
 
 }
diff --git a/deps/nostalgia/src/olympic/turbine/src/gba/context.hpp b/deps/nostalgia/src/olympic/turbine/src/gba/context.hpp
index 64a1caa..02b0520 100644
--- a/deps/nostalgia/src/olympic/turbine/src/gba/context.hpp
+++ b/deps/nostalgia/src/olympic/turbine/src/gba/context.hpp
@@ -17,7 +17,7 @@ class Context {
 		UpdateHandler updateHandler = [](Context&) -> int {return 0;};
 		keel::Context keelCtx;
 		KeyEventHandler keyEventHandler = nullptr;
-		void *applicationData = nullptr;
+		WrapPtr applicationData;
 
 		// GBA impl data /////////////////////////////////////////////////////////
 		bool running = true;
diff --git a/deps/nostalgia/src/olympic/turbine/src/glfw/context.cpp b/deps/nostalgia/src/olympic/turbine/src/glfw/context.cpp
index ded5388..30db318 100644
--- a/deps/nostalgia/src/olympic/turbine/src/glfw/context.cpp
+++ b/deps/nostalgia/src/olympic/turbine/src/glfw/context.cpp
@@ -20,12 +20,12 @@ keel::Context &keelCtx(Context &ctx) noexcept {
 	return ctx.keelCtx;
 }
 
-void setApplicationData(Context &ctx, void *applicationData) noexcept {
+void setApplicationDataRaw(Context &ctx, WrapBase &applicationData) noexcept {
 	ctx.applicationData = applicationData;
 }
 
-void *applicationDataRaw(Context &ctx) noexcept {
-	return ctx.applicationData;
+WrapBase *applicationDataRaw(Context &ctx) noexcept {
+	return ctx.applicationData.getWrapBase();
 }
 
 }
diff --git a/deps/nostalgia/src/olympic/turbine/src/glfw/context.hpp b/deps/nostalgia/src/olympic/turbine/src/glfw/context.hpp
index 6075cf8..21d420e 100644
--- a/deps/nostalgia/src/olympic/turbine/src/glfw/context.hpp
+++ b/deps/nostalgia/src/olympic/turbine/src/glfw/context.hpp
@@ -16,7 +16,7 @@ class Context {
 		UpdateHandler updateHandler = [](Context&) -> int {return 0;};
 		keel::Context keelCtx;
 		KeyEventHandler keyEventHandler = nullptr;
-		void *applicationData = nullptr;
+		WrapPtr applicationData;
 
 		// GLFW impl data ////////////////////////////////////////////////////////
 		int uninterruptedRefreshes = 3;