diff --git a/src/DebugOverlay.cpp b/src/DebugOverlay.cpp
index b994129..2f0fcd5 100644
--- a/src/DebugOverlay.cpp
+++ b/src/DebugOverlay.cpp
@@ -21,7 +21,7 @@ DebugOverlay::DebugOverlay(const std::string &fontPath)
 
 void DebugOverlay::update(const int drawCalls, const float timeScale,
                           const sf::RenderWindow &window,
-                          const size_t threadCount,
+                          const size_t threadCount, const size_t totalBalls,
                           const size_t ballsPerThread) {
   const float frameTime = m_fpsClock.restart().asSeconds();
 
@@ -54,7 +54,9 @@ void DebugOverlay::update(const int drawCalls, const float timeScale,
   oss << "Mouse: " << mousePos.x << ", " << mousePos.y << "\n";
   oss << "Time scale: " << timeScale << "\n";
   oss << "\nThreads: " << threadCount;
-  oss << "\nBalls per thread: " << ballsPerThread;
+  oss << "\nBalls per thread: " << ballsPerThread << "\n";
+
+  oss << "\nTotal Balls: " << totalBalls;
 
   m_text.setString(oss.str());
 }
diff --git a/src/DebugOverlay.hpp b/src/DebugOverlay.hpp
index 8d6beba..5f518ac 100644
--- a/src/DebugOverlay.hpp
+++ b/src/DebugOverlay.hpp
@@ -10,7 +10,7 @@ class DebugOverlay {
   explicit DebugOverlay(const std::string &fontPath);
 
   void update(int drawCalls, float timeScale, const sf::RenderWindow &window,
-              size_t threadCount, size_t ballsPerThread);
+              size_t threadCount, size_t totalBalls, size_t ballsPerThread);
 
   void draw(sf::RenderWindow &window) const;
 
diff --git a/src/Game.cpp b/src/Game.cpp
index ca78587..4516d43 100644
--- a/src/Game.cpp
+++ b/src/Game.cpp
@@ -36,6 +36,7 @@ Game::Game()
 }
 
 void Game::processKeyPressed(const sf::Event::KeyPressed &keyPressed) {
+  const auto mousePos = sf::Mouse::getPosition(m_window);
   switch (keyPressed.code) {
     case sf::Keyboard::Key::Equal:
       m_timeScale = std::min(10.0f, m_timeScale + 0.25f);
@@ -48,6 +49,11 @@ void Game::processKeyPressed(const sf::Event::KeyPressed &keyPressed) {
       break;
     case sf::Keyboard::Key::Delete:
       if (!m_objects.empty()) m_objects.pop_back();
+      break;
+    case sf::Keyboard::Key::Insert:
+      spawnBall(sf::Vector2f(static_cast<float>(mousePos.x),
+                             static_cast<float>(mousePos.y)));
+      break;
     default:
       break;
   }
@@ -224,7 +230,7 @@ void Game::render() {
     const size_t threadCount = m_threadPool.getThreadCount();
     const size_t ballsPerThread = m_objects.size() / threadCount;
     m_debugOverlay.update(m_drawCallCount + 2, m_timeScale, m_window,
-                          threadCount, ballsPerThread);
+                          threadCount, m_objects.size(), ballsPerThread);
     m_debugOverlay.draw(m_window);
   }