diff --git a/include/Screeps/Memory.hpp b/include/Screeps/Memory.hpp
index 448fac9..c80b14c 100644
--- a/include/Screeps/Memory.hpp
+++ b/include/Screeps/Memory.hpp
@@ -3,12 +3,17 @@
 
 #include "Object.hpp"
 
+#include <string_view>
+
 namespace Screeps {
 
 class MemoryObject : public Object
 {
 public:
 	MemoryObject();
+
+	JSON operator[](const std::string_view& key);
+	void set(const std::string_view& key, const JSON& value);
 };
 
 extern MemoryObject Memory;
diff --git a/src/Game.cpp b/src/Game.cpp
index ddaddce..290f00d 100644
--- a/src/Game.cpp
+++ b/src/Game.cpp
@@ -17,7 +17,7 @@ convertObjectToMap(const JS::Value& object)
 {
 	std::map<std::string, T> map;
 	for (const auto& pair : JS::jsObjectToMap(object))
-		map.emplace(pair.first, T{pair.second});
+		map.insert(std::make_pair(pair.first, T{pair.second}));
 	return map;
 }
 
@@ -107,6 +107,11 @@ int GameObject::time() const
 	return value()["time"].as<int>();
 }
 
+double GameObject::cpuGetUsed()
+{
+	return value()["cpu"].call<double>("getUsed");
+}
+
 int GameObject::cpuGeneratePixel()
 {
 	return value()["cpu"].call<int>("generatePixel");
diff --git a/src/Memory.cpp b/src/Memory.cpp
index cfd2305..5795502 100644
--- a/src/Memory.cpp
+++ b/src/Memory.cpp
@@ -1,9 +1,21 @@
 #include "Memory.hpp"
 
+#include <Screeps/JSON.hpp>
+
 namespace Screeps {
 
 MemoryObject Memory;
 
 MemoryObject::MemoryObject() = default;
 
+JSON MemoryObject::operator[](const std::string_view& key)
+{
+	return JS::toJSON(value()[key.data()]);
+}
+
+void MemoryObject::set(const std::string_view& key, const JSON& value)
+{
+	this->value().set(key.data(), JS::fromJSON(value));
+}
+
 } // namespace Screeps