diff --git a/libs/app/include/psemek/app/storage.hpp b/libs/app/include/psemek/app/storage.hpp
new file mode 100644
index 00000000..67e48432
--- /dev/null
+++ b/libs/app/include/psemek/app/storage.hpp
@@ -0,0 +1,18 @@
+#pragma once
+
+#include <psemek/io/stream.hpp>
+
+#include <filesystem>
+#include <memory>
+
+namespace psemek::app
+{
+
+	std::filesystem::path storage_root();
+	void set_storage_root(std::filesystem::path const & root);
+
+	// Implemented by a backend library
+	std::unique_ptr<io::istream> read_storage(std::filesystem::path const & relative_path);
+	std::unique_ptr<io::ostream> write_storage(std::filesystem::path const & relative_path);
+
+}
diff --git a/libs/app/source/storage.cpp b/libs/app/source/storage.cpp
new file mode 100644
index 00000000..c9a0fd17
--- /dev/null
+++ b/libs/app/source/storage.cpp
@@ -0,0 +1,24 @@
+#include <psemek/app/storage.hpp>
+#include <psemek/util/executable_path.hpp>
+
+namespace psemek::app
+{
+
+	namespace
+	{
+
+		static std::filesystem::path global_storage_root = util::executable_path().parent_path();
+
+	}
+
+	std::filesystem::path storage_root()
+	{
+		return global_storage_root;
+	}
+
+	void set_storage_root(std::filesystem::path const & root)
+	{
+		global_storage_root = root;
+	}
+
+}
diff --git a/libs/sdl2/source/main.cpp b/libs/sdl2/source/main.cpp
index 3e5d6152..ce68b2ce 100644
--- a/libs/sdl2/source/main.cpp
+++ b/libs/sdl2/source/main.cpp
@@ -1,5 +1,6 @@
 #include <psemek/app/application.hpp>
 #include <psemek/app/resource.hpp>
+#include <psemek/app/storage.hpp>
 #include <psemek/gfx/init.hpp>
 #include <psemek/sdl2/init.hpp>
 #include <psemek/sdl2/window.hpp>
@@ -56,6 +57,10 @@ int main(int argc, char ** argv) try
 	// In web builds, resources are stored in
 	// the Emscripten virtual filesystem
 	app::set_resource_root("/resources");
+
+	backend_t opfs = wasmfs_create_opfs_backend();
+	wasmfs_create_directory("/storage", 0777, opfs);
+	app::set_storage_root("/storage");
 #endif
 
 	auto const factory = app::make_application_factory();
diff --git a/libs/sdl2/source/storage.cpp b/libs/sdl2/source/storage.cpp
new file mode 100644
index 00000000..d2fd0ba0
--- /dev/null
+++ b/libs/sdl2/source/storage.cpp
@@ -0,0 +1,20 @@
+#include <psemek/app/storage.hpp>
+#include <psemek/io/file_stream.hpp>
+#include <psemek/log/log.hpp>
+
+namespace psemek::app
+{
+
+	std::unique_ptr<io::istream> read_storage(std::filesystem::path const & relative_path)
+	{
+		log::info() << "Reading storage " << relative_path;
+		return std::make_unique<io::file_istream>(app::storage_root() / relative_path);
+	}
+
+	std::unique_ptr<io::ostream> write_storage(std::filesystem::path const & relative_path)
+	{
+		log::info() << "Writing storage " << relative_path;
+		return std::make_unique<io::file_ostream>(app::storage_root() / relative_path);
+	}
+
+}
diff --git a/package/CMakeLists.txt b/package/CMakeLists.txt
index cbb1bd1a..71ea1900 100644
--- a/package/CMakeLists.txt
+++ b/package/CMakeLists.txt
@@ -8,7 +8,7 @@ if(PSEMEK_PACKAGE_MODE)
 	set(PSEMEK_PACKAGE_LINK_FLAGS_RAW)
 
 	if(PSEMEK_PLATFORM_WEB)
-		list(APPEND PSEMEK_PACKAGE_LINK_FLAGS_RAW "-sMIN_WEBGL_VERSION=2" "-sNO_DISABLE_EXCEPTION_CATCHING" "-sFULL_ES3")
+		list(APPEND PSEMEK_PACKAGE_LINK_FLAGS_RAW -sUSE_SDL=2 -sMIN_WEBGL_VERSION=2 -sNO_DISABLE_EXCEPTION_CATCHING -sFULL_ES3 -sWASMFS -sALLOW_MEMORY_GROWTH -sGROWABLE_ARRAYBUFFERS=0 -sASYNCIFY)
 		list(APPEND PSEMEK_PACKAGE_LINK_FLAGS_RAW "-sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE='$autoResumeAudioContext','$dynCall'")
 		if(CMAKE_BUILD_TYPE STREQUAL Debug)
 			list(APPEND PSEMEK_PACKAGE_LINK_FLAGS_RAW "-g")