diff --git a/.gitignore b/.gitignore
index fbe3fdc..ee75701 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /.idea/
+/.cache/
 /option.json
diff --git a/source/gui/install.py b/source/gui/install.py
index dc037bc..e197294 100644
--- a/source/gui/install.py
+++ b/source/gui/install.py
@@ -77,8 +77,8 @@ class Window(tkinter.Tk):
         self.after(0, self.run_after)
         self.mainloop()
 
-    @event.register
-    def run_after(self) -> None:
+    @staticmethod
+    def run_after() -> None:
         """
         Run after the installer has been initialised, can be used to add plugins
         :return:
@@ -454,7 +454,13 @@ class ProgressBar(ttk.LabelFrame):
         :param value: the value
         :return:
         """
-        self.progress_bar.configure(mode="determinate" if value else "indeterminate")
+        if value:
+            if self.progress_bar["mode"] == "indeterminate": self.progress_bar.stop()
+            self.progress_bar.configure(mode="determinate")
+
+        else:
+            if self.progress_bar["mode"] == "determinate": self.progress_bar.start(50)
+            self.progress_bar.configure(mode="indeterminate")
 
 
 # Combobox to select the pack
diff --git a/source/mkw/Game.py b/source/mkw/Game.py
index 5cddbad..63d438f 100644
--- a/source/mkw/Game.py
+++ b/source/mkw/Game.py
@@ -1,11 +1,32 @@
-import time
 from pathlib import Path
 from typing import Generator
 
 from source.mkw.ModConfig import ModConfig
+from source.wt import szs
 from source.wt.wit import WITPath, Region, Extension
 
 
+def extract_autoadd(extracted_game: Path | str, destination_path: Path | str) -> Path:
+    """
+    Extract all the autoadd files from the game to destination_path
+    :param extracted_game: path of the extracted game
+    :param destination_path: directory where the autoadd files will be extracted
+    :return: directory where the autoadd files were extracted
+    """
+    yield {"description": "Extracting autoadd files...", "determinate": False}
+    szs.autoadd(extracted_game / "files/Race/Course/", destination_path)
+
+
+def install_mystuff(extracted_game: Path | str) -> None:
+    """
+    Install mystuff directory
+    :param extracted_game: the extracted game
+    :return:
+    """
+    yield {"description": "Installing MyStuff directory...", "determinate": False}
+
+
+
 class Game:
     def __init__(self, path: Path | str):
         self.wit_path = WITPath(path)
@@ -34,7 +55,6 @@ class Game:
             yield {
                 "description": f'EXTRACTING - {gen_data["percentage"]}% - (estimated time remaining: '
                                f'{gen_data["estimation"] if gen_data["estimation"] is not None else "-:--"})',
-
                 "maximum": 100,
                 "value": gen_data["percentage"],
                 "determinate": True
@@ -43,6 +63,25 @@ class Game:
         except StopIteration as e:
             return e.value
 
+    def get_output_directory(self, dest: Path | str, mod_config: ModConfig) -> Path:
+        """
+        Return the directory where the game will be installed
+        :param mod_config: mod configuration
+        :return: directory where the game will be installed
+        """
+        dest = Path(dest)
+
+        extracted_game: Path = Path(dest / f"{mod_config.nickname} {mod_config.version}")
+        dest_name: str = extracted_game.name
+
+        # if the directory already exist, add a number to the name
+        i: int = 0
+        while extracted_game.exists():
+            i += 1
+            extracted_game = extracted_game.with_name(dest_name + f" ({i})")
+
+        return extracted_game
+
     def install_mod(self, dest: Path, mod_config: ModConfig, output_type: Extension) -> Generator[dict, None, None]:
         """
         Patch the game with the mod
@@ -50,6 +89,14 @@ class Game:
         :mod_config: mod configuration
         :output_type: type of the destination game
         """
-        # yield from self.extract(dest / f"{mod_config.nickname} {mod_config.version}")
-        print(mod_config.get_ctfile())
-        yield {}
+        # create a cache directory for some files
+        cache_directory: Path = Path("./.cache")
+        cache_directory.mkdir(parents=True, exist_ok=True)
+
+        # get the directory where the game will be extracted
+        extracted_game: Path = self.get_output_directory(dest, mod_config)
+
+        yield from self.extract(extracted_game)
+        yield from extract_autoadd(extracted_game, cache_directory / "autoadd/")
+        yield from install_mystuff(extracted_game)
+
diff --git a/source/mkw/ModConfig.py b/source/mkw/ModConfig.py
index 6f2fed3..451fc92 100644
--- a/source/mkw/ModConfig.py
+++ b/source/mkw/ModConfig.py
@@ -34,9 +34,9 @@ class ModConfig:
         self.default_track: "Track | TrackGroup" = default_track if default_track is not None else None
         self._tracks: list["Track | TrackGroup"] = tracks if tracks is not None else []
         self.track_formatting: dict[str, str] = {
-            "menu_name": "{{ getattr(track, 'name', '/') }}",
-            "race_name": "{{ getattr(track, 'name', '/') }}",
-            "file_name": "{{ getattr(track, 'sha1', '/') }}"
+            "menu_name": "{{ getattr(track, 'name', '') }}",
+            "race_name": "{{ getattr(track, 'name', '') }}",
+            "file_name": "{{ getattr(track, 'sha1', '_') }}",
         } | (track_formatting if track_formatting is not None else {})
 
         self.original_track_prefix: bool = original_track_prefix if original_track_prefix is not None else True
diff --git a/source/mkw/Track.py b/source/mkw/Track.py
index ccec002..c2554b7 100644
--- a/source/mkw/Track.py
+++ b/source/mkw/Track.py
@@ -103,7 +103,6 @@ class Track:
         :hidden: if the track is in a group
         :return: ctfile
         """
-        # TODO: filename, info and - are not implemented
         menu_name = f'{self.repr_format(mod_config=mod_config, format=mod_config.track_formatting["menu_name"])!r}'
         file_name = f'{self.repr_format(mod_config=mod_config, format=mod_config.track_formatting["file_name"])!r}'
 
diff --git a/source/option.py b/source/option.py
index a93c3b6..6f69cef 100644
--- a/source/option.py
+++ b/source/option.py
@@ -43,7 +43,7 @@ class Option:
         :return: None
         """
         if option_file is None: option_file = self._path
-        if isinstance(option_file, str): option_file = Path(option_file)
+        option_file = Path(option_file)
 
         with option_file.open("w") as file:
             json.dump(self._options, file, indent=4, ensure_ascii=False)
@@ -68,7 +68,7 @@ class Option:
         :param option_file: the option file
         :return: Option
         """
-        if isinstance(option_file, str): option_file = Path(option_file)
+        option_file = Path(option_file)
 
         if not option_file.exists(): obj = cls()
         else: obj = cls.from_dict(json.loads(option_file.read_text(encoding="utf8")))
diff --git a/source/safe_eval.py b/source/safe_eval.py
index 1d9ff61..5e81c69 100644
--- a/source/safe_eval.py
+++ b/source/safe_eval.py
@@ -44,7 +44,7 @@ class SafeFunction:
         :return: the attribute value
         """
         attr = getattr(obj, attr) if default is None else getattr(obj, attr, default)
-        if callable(attr): raise AttributeError(f"getattr can't be used for functions (tried: tr{attr})")
+        if callable(attr): raise AttributeError(f"getattr can't be used for functions (tried: {attr})")
         return attr
 
 
diff --git a/source/wt/szs.py b/source/wt/szs.py
index 3745bfd..96600cd 100644
--- a/source/wt/szs.py
+++ b/source/wt/szs.py
@@ -4,11 +4,24 @@ from source.wt import _run, _run_dict
 tools_path = tools_szs_dir / ("wszst.exe" if system == "win64" else "wszst")
 
 
+@better_wt_error(tools_path)
+def autoadd(course_directory: Path | str, destination_path: Path | str) -> Path:
+    """
+    Extract all the autoadd files from course_directory to destination_path
+    :param course_directory: directory with all the default tracks of the game
+    :param destination_path: directory where the autoadd files will be extracted
+    :return: directory where the autoadd files were extracted
+    """
+    destination_path = Path(destination_path)
+    _run(tools_path, "AUTOADD", course_directory, "-D", destination_path)
+    return destination_path
+
+
 class SZSPath:
     __slots__ = ("path", "_analyze")
 
     def __init__(self, path: Path | str):
-        self.path: Path = path if isinstance(path, Path) else Path(path)
+        self.path: Path = Path(path)
         self._analyze = None
 
     def __repr__(self) -> str:
@@ -58,10 +71,10 @@ class SZSPath:
         :param dest: output directory
         :return:
         """
-        dest: Path = dest if isinstance(dest, Path) else Path(dest)
+        dest: Path = Path(dest)
         if dest.is_dir(): dest /= self.path.name
 
-        self._run("EXTRACT", self.path, "-d", dest)
+        self._run("EXTRACT", self.path, "-D", dest)
         return dest
 
     def analyze(self) -> dict:
@@ -128,7 +141,7 @@ class SZSSubPath:
         """
         if self.is_dir(): raise ValueError("Can't extract a directory")
 
-        dest: Path = dest if isinstance(dest, Path) else Path(dest)
+        dest: Path = Path(dest)
         if dest.is_dir(): dest /= self.basename()
 
         with dest.open("wb") as file:
diff --git a/source/wt/wit.py b/source/wt/wit.py
index ea8ed46..03175db 100644
--- a/source/wt/wit.py
+++ b/source/wt/wit.py
@@ -35,7 +35,7 @@ class Region(enum.Enum):
     """
     PAL = "PAL"
     USA = "USA"
-    EUR = "EUR"
+    JAP = "JAP"
     KOR = "KOR"
 
 
@@ -214,7 +214,7 @@ class WITSubPath:
         :param dest: destination directory
         :return: the extracted file path
         """
-        dest: Path = dest if isinstance(dest, Path) else Path(dest)
+        dest: Path = Path(dest)
 
         if self.wit_path.extension == Extension.FST:
             # if flat is used, extract the file / dir into the destination directory, without subdirectory