diff --git a/source/screen.cpp b/source/screen.cpp
index 70e37786..f15ba770 100644
--- a/source/screen.cpp
+++ b/source/screen.cpp
@@ -40,13 +40,6 @@ Screen::Screen(SDL_Window *window, SDL_Renderer *renderer)
     : window_(window),
       renderer_(renderer)
 {
-    // Obtiene información sobre la pantalla
-    SDL_DisplayMode DM;
-    SDL_GetCurrentDisplayMode(0, &DM);
-
-    // Calcula el máximo factor de zoom que se puede aplicar a la pantalla
-    options.window.max_zoom = std::min(DM.w / options.game.width, DM.h / options.game.height);
-
     adjustGameCanvasRect();
     adjustWindowSize();
 
@@ -81,6 +74,7 @@ Screen::Screen(SDL_Window *window, SDL_Renderer *renderer)
     setVideoMode(options.video.mode);
 
     // Muestra la ventana
+    SDL_SetWindowPosition(window_, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
     show();
 }
 
@@ -191,7 +185,7 @@ void Screen::setVideoMode(int videoMode)
 // Camibia entre pantalla completa y ventana
 void Screen::toggleVideoMode()
 {
-    options.video.mode = (options.video.mode == 0) ? SDL_WINDOW_FULLSCREEN : 0;
+    options.video.mode = (options.video.mode == 0) ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0;
     setVideoMode(options.video.mode);
 }
 
@@ -201,7 +195,8 @@ bool Screen::decWindowZoom()
     if (options.video.mode == 0)
     {
         int previous_zoom = options.window.zoom;
-        options.window.zoom = std::max(--options.window.zoom, 1);
+        --options.window.zoom;
+        options.window.zoom = std::max(options.window.zoom, 1);
 
         if (options.window.zoom != previous_zoom)
         {
@@ -213,14 +208,14 @@ bool Screen::decWindowZoom()
     return false;
 }
 
-
 // Aumenta el tamaño de la ventana
 bool Screen::incWindowZoom()
 {
     if (options.video.mode == 0)
     {
         int previous_zoom = options.window.zoom;
-        options.window.zoom = std::min(++options.window.zoom, options.window.max_zoom);
+        ++options.window.zoom;
+        options.window.zoom = std::min(options.window.zoom, options.window.max_zoom);
 
         if (options.window.zoom != previous_zoom)
         {
@@ -348,11 +343,24 @@ void Screen::adjustWindowSize()
     window_width_ = options.game.width + (options.video.border.enabled ? options.video.border.width * 2 : 0);
     window_height_ = options.game.height + (options.video.border.enabled ? options.video.border.height * 2 : 0);
 
+    // Establece el nuevo tamaño
     if (options.video.mode == 0)
     {
+        int old_width, old_height;
+        SDL_GetWindowSize(window_, &old_width, &old_height);
+
+        int old_pos_x, old_pos_y;
+        SDL_GetWindowPosition(window_, &old_pos_x, &old_pos_y);
+
+        int new_pos_x = old_pos_x + (old_width - (window_width_ * options.window.zoom)) / 2;
+        int new_pos_y = old_pos_y + (old_height - (window_height_ * options.window.zoom)) / 2;
+
         SDL_SetWindowSize(window_, window_width_ * options.window.zoom, window_height_ * options.window.zoom);
-        SDL_SetWindowPosition(window_, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
+        SDL_SetWindowPosition(window_, std::max(new_pos_x, 30), std::max(new_pos_y, 10));
     }
+
+    options.window.max_zoom = getMaxZoom();
+    renderBlackFrame();
 }
 
 // Ajusta game_canvas_rect_
@@ -371,4 +379,24 @@ void Screen::adjustRenderLogicalSize()
     const int extra_width = options.video.border.enabled ? options.video.border.width * 2 : 0;
     const int extra_height = options.video.border.enabled ? options.video.border.height * 2 : 0;
     SDL_RenderSetLogicalSize(renderer_, options.game.width + extra_width, options.game.height + extra_height);
+}
+
+// Obtiene el tamaño máximo de zoom posible para la ventana
+int Screen::getMaxZoom()
+{
+    // Obtiene información sobre la pantalla
+    SDL_DisplayMode DM;
+    SDL_GetCurrentDisplayMode(0, &DM);
+
+    // Calcula el máximo factor de zoom que se puede aplicar a la pantalla
+    return std::min(DM.w / window_width_, DM.h / window_height_);
+}
+
+// Renderiza un frame negro
+void Screen::renderBlackFrame()
+{
+    SDL_SetRenderTarget(renderer_, nullptr);
+    SDL_SetRenderDrawColor(renderer_, 0x00, 0x00, 0x00, 0xFF);
+    SDL_RenderClear(renderer_);
+    SDL_RenderPresent(renderer_);
 }
\ No newline at end of file
diff --git a/source/screen.h b/source/screen.h
index ec6c55ed..d34278c5 100644
--- a/source/screen.h
+++ b/source/screen.h
@@ -51,6 +51,12 @@ private:
 	// Ajusta el tamaño lógico del renderizador
 	void adjustRenderLogicalSize();
 
+	// Obtiene el tamaño máximo de zoom posible para la ventana
+	int getMaxZoom();
+
+	// Renderiza un frame negro
+	void renderBlackFrame();
+
 	// Constructor
 	Screen(SDL_Window *window, SDL_Renderer *renderer);
 
diff --git a/source/utils.h b/source/utils.h
index 647ae993..5fca2e73 100644
--- a/source/utils.h
+++ b/source/utils.h
@@ -3,6 +3,7 @@
 #include <SDL2/SDL_rect.h>    // for SDL_Rect, SDL_Point
 #include <SDL2/SDL_stdinc.h>  // for Uint8
 #include <string>             // for string
+#include <vector>
 
 // Tipos de paleta
 enum class Palette : int