diff --git a/breakout/breakout.cpp b/breakout/breakout.cpp
index 2ace101..3b55456 100644
--- a/breakout/breakout.cpp
+++ b/breakout/breakout.cpp
@@ -9,6 +9,7 @@
 #include "../dependencies/include/glad/glad.h"
 #include "./game.hpp"
 #include "./resourceManager.hpp"
+#include "./constants.hpp"
 
 // GLFW function declarations
 void framebuffer_size_callback(GLFWwindow *window, int width, int height);
@@ -150,7 +151,7 @@ void key_callback_sad(int key) {
 void key_callback(GLFWwindow *window, int key, int /*scancode*/, int action,
                   int /*mode*/) {
   // Define the array type for keys
-  const int MAX_KEYS_TRACKED = 1024;
+  const int MAX_KEYS_TRACKED = constants::MAX_KEYS_TRACKED;
   using KeyArray = std::array<bool, MAX_KEYS_TRACKED>;
   exit_window(window, key, action);
   if (key >= 0 && key < MAX_KEYS_TRACKED) {
diff --git a/breakout/constants.hpp b/breakout/constants.hpp
new file mode 100644
index 0000000..d7c5de0
--- /dev/null
+++ b/breakout/constants.hpp
@@ -0,0 +1,10 @@
+// Copyright [2023] Krzysztof Rudnicki
+#ifndef BREAKOUT_CONSTANTS_HPP_
+#define BREAKOUT_CONSTANTS_HPP_
+
+namespace constants {
+    constexpr int MAX_KEYS_TRACKED { 1024 };
+    constexpr int GAME_WINDOW_SIZE_ALLIGNMENT { 8 };
+}
+
+#endif  // BREAKOUT_CONSTANTS_HPP_
diff --git a/breakout/game.cpp b/breakout/game.cpp
index 25154e6..dc6db34 100644
--- a/breakout/game.cpp
+++ b/breakout/game.cpp
@@ -3,14 +3,17 @@
 #define HOME_KUCHY_ENGINEER_THESIS_WUT_BREAKOUT_GAME_CPP
 #include "../breakout/game.hpp"
 
-Game::Game(unsigned int width, unsigned int height)
-    : State(GAME_ACTIVE), Keys(), Width(width), Height(height) {}
+
+
+Game::Game(GameWindowSize size)
+    : State(GAME_ACTIVE), Keys(), Width(size.width), Height(size.height) {
+}
 
 void Game::Init() {}
 
-void Game::Update(double dt) {}
+void Game::Update(double deltaTime) {}
 
-void Game::ProcessInput(double dt) {}
+void Game::ProcessInput(double deltaTime) {}
 
 void Game::Render() {}
 
diff --git a/breakout/game.hpp b/breakout/game.hpp
index 8be52b0..5fcc3f4 100644
--- a/breakout/game.hpp
+++ b/breakout/game.hpp
@@ -1,30 +1,44 @@
 // Copyright [2023] Krzysztof Rudnicki
-#ifndef HOME_KUCHY_ENGINEER_THESIS_WUT_BREAKOUT_GAME_HPP
-#define HOME_KUCHY_ENGINEER_THESIS_WUT_BREAKOUT_GAME_HPP
-#include <array>
+#ifndef BREAKOUT_GAME_HPP_
+#define BREAKOUT_GAME_HPP_
 
 #include <GLFW/glfw3.h>
 
+#include <array>
+
 #include "../dependencies/include/glad/glad.h"
+#include "./constants.hpp"
+
+struct GameWindowSize {
+  unsigned int width;
+  unsigned int height;
+} __attribute__((aligned(constants::GAME_WINDOW_SIZE_ALLIGNMENT)));
 
 // Represents the current state of the game
 enum GameState { GAME_ACTIVE, GAME_MENU, GAME_WIN };
 
 class Game {
-public:
+ private:
   // game state
   GameState State;
-  std::array<bool, 1024> Keys;
+  std::array<bool, constants::MAX_KEYS_TRACKED> Keys;
   unsigned int Width, Height;
+ public:
   // constructor/destructor
-  Game(unsigned int width, unsigned int height);
+  explicit Game(GameWindowSize size);
   ~Game() = default;
+
+  // rule of five
+  Game(const Game& other) = delete;
+  Game& operator=(const Game& other) = delete;
+  Game(Game&& other) noexcept = delete;
+  Game& operator=(Game&& other) noexcept = delete;
   // initialize game state (load all shaders/textures/levels)
   void Init();
   // game loop
-  void ProcessInput(double dt);
-  void Update(double dt);
+  void ProcessInput(double deltaTime);
+  void Update(double deltaTime);
   void Render();
 };
 
-#endif // HOME_KUCHY_ENGINEER_THESIS_WUT_BREAKOUT_GAME_HPP
+#endif  // BREAKOUT_GAME_HPP_