diff --git a/source/engine.cpp b/source/engine.cpp
index f9ede7a..efa726d 100644
--- a/source/engine.cpp
+++ b/source/engine.cpp
@@ -57,6 +57,12 @@ bool Engine::initialize(int width, int height, bool fullscreen) {
     int logical_width = (width > 0) ? width : SCREEN_WIDTH;
     int logical_height = (height > 0) ? height : SCREEN_HEIGHT;
 
+    // Guardar resolución base (configurada por CLI)
+    base_screen_width_ = logical_width;
+    base_screen_height_ = logical_height;
+    current_screen_width_ = logical_width;
+    current_screen_height_ = logical_height;
+
     if (!SDL_Init(SDL_INIT_VIDEO)) {
         std::cout << "¡SDL no se pudo inicializar! Error de SDL: " << SDL_GetError() << std::endl;
         success = false;
@@ -891,16 +897,16 @@ void Engine::toggleRealFullscreen() {
         // Ocultar cursor en real fullscreen
         SDL_HideCursor();
     } else {
-        // Volver a resolución original
-        current_screen_width_ = SCREEN_WIDTH;
-        current_screen_height_ = SCREEN_HEIGHT;
+        // Volver a resolución base (configurada por CLI o default)
+        current_screen_width_ = base_screen_width_;
+        current_screen_height_ = base_screen_height_;
 
         // Restaurar ventana normal
         SDL_SetWindowFullscreen(window_, false);
-        SDL_SetWindowSize(window_, SCREEN_WIDTH * WINDOW_ZOOM, SCREEN_HEIGHT * WINDOW_ZOOM);
+        SDL_SetWindowSize(window_, base_screen_width_ * WINDOW_ZOOM, base_screen_height_ * WINDOW_ZOOM);
 
-        // Restaurar presentación lógica original
-        SDL_SetRenderLogicalPresentation(renderer_, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_LOGICAL_PRESENTATION_INTEGER_SCALE);
+        // Restaurar presentación lógica base
+        SDL_SetRenderLogicalPresentation(renderer_, base_screen_width_, base_screen_height_, SDL_LOGICAL_PRESENTATION_INTEGER_SCALE);
 
         // Reinicar la escena con resolución original
         initBalls(scenario_);
diff --git a/source/engine.h b/source/engine.h
index 1ee435d..451c285 100644
--- a/source/engine.h
+++ b/source/engine.h
@@ -64,7 +64,11 @@ private:
     bool real_fullscreen_enabled_ = false;
     ScalingMode current_scaling_mode_ = ScalingMode::INTEGER;  // Modo de escalado actual (F5)
 
-    // Resolución dinámica para modo real fullscreen
+    // Resolución base (configurada por CLI o default)
+    int base_screen_width_ = SCREEN_WIDTH;
+    int base_screen_height_ = SCREEN_HEIGHT;
+
+    // Resolución dinámica actual (cambia en fullscreen real)
     int current_screen_width_ = SCREEN_WIDTH;
     int current_screen_height_ = SCREEN_HEIGHT;