diff --git a/source/Game.py b/source/Game.py
index 94f401d..dee983d 100644
--- a/source/Game.py
+++ b/source/Game.py
@@ -187,9 +187,17 @@ class Game:
                                 for ffp in fs[fp][nf]: count_rf(path=f)
             ###
             extracted_file = []
-            max_step += 4  # PATCH main.dol and PATCH lecode.bin, converting, changing ID
-            self.gui.progress(show=True, indeter=False, statut=self.gui.translate("Installing mod"), max=max_step,
+            max_step += 5  # PATCH main.dol and PATCH lecode.bin, converting, changing ID, copying MyStuff Folder
+
+            self.gui.progress(show=True, indeter=False, statut=self.gui.translate("Copying MyStuff"), max=max_step,
                               step=0)
+            
+            mystuff_folder = self.gui.stringvar_mystuff_folder.get()
+            if mystuff_folder and mystuff_folder != "None":
+                shutil.copytree(mystuff_folder, self.path + "/files/", dirs_exist_ok=True)
+
+            self.gui.progress(show=True, indeter=False, statut=self.gui.translate("Installing mod"),
+                              add=1)
 
             def replace_file(path, file, subpath="/") -> None:
                 """
diff --git a/source/Gui.py b/source/Gui.py
index 529ca11..76b178c 100644
--- a/source/Gui.py
+++ b/source/Gui.py
@@ -40,6 +40,7 @@ class Gui:
         self.stringvar_mark_track_from_version = StringVar(value="None")
         self.stringvar_sort_track_by = StringVar(value="name")
         self.boolvar_use_debug_mode = BooleanVar(value=False)
+        self.stringvar_mystuff_folder = StringVar(value=None)
 
         self.root.title(self.translate("MKWFaraphel Installer"))
         self.root.resizable(False, False)
@@ -85,6 +86,16 @@ class Gui:
         self.menu_advanced.add_checkbutton(label=self.translate("Don't check for update"), variable=self.boolvar_dont_check_for_update, command=lambda: self.option.edit("dont_check_for_update", self.boolvar_dont_check_for_update))
         self.menu_advanced.add_checkbutton(label=self.translate("Use debug mode"), variable=self.boolvar_use_debug_mode)
 
+        def select_mystuff_folder(index, init=False):
+            self.stringvar_mystuff_folder.set(None)
+            if not init:
+                mystuff_dir = filedialog.askdirectory()
+                if mystuff_dir: self.stringvar_mystuff_folder.set(mystuff_dir)
+            self.menu_advanced.entryconfig(index, label=f"Apply MyStuff Folder ({self.stringvar_mystuff_folder.get()!r} selected)")
+
+        self.menu_advanced.add_command(command=lambda index=self.menu_advanced.index("end")+1: select_mystuff_folder(index))
+        select_mystuff_folder(self.menu_advanced.index("end"), init=True)
+
         self.menu_advanced.add_separator()
         self.menu_advanced.add_command(label=self.translate("Number of track conversion process", " :"))
         self.menu_advanced.add_radiobutton(label=self.translate("1 ", "process"), variable=self.intvar_process_track, value=1, command=lambda: self.option.edit("process_track", 1))