--- a/pytouhou/options.py
+++ b/pytouhou/options.py
@@ -12,25 +12,108 @@
 ## GNU General Public License for more details.
 ##
 
-from argparse import ArgumentParser
+import os
+from ConfigParser import RawConfigParser, NoOptionError
+
+from pytouhou.utils.xdg import load_config_paths
+
+
+class Options(object):
+    def __init__(self, name, defaults):
+        load_paths = list(reversed([os.path.join(directory, '%s.cfg' % name)
+                                    for directory
+                                    in load_config_paths(name)]))
+
+        self.config = RawConfigParser(defaults)
+        self.paths = self.config.read(load_paths)
+        self.section = name if self.config.has_section(name) else 'DEFAULT'
+
+    def get(self, option):
+        try:
+            return self.config.get(self.section, option)
+        except NoOptionError:
+            return None
+
+
+def patch_argument_parser():
+    from argparse import ArgumentParser, _ActionsContainer
+
+    original_method = _ActionsContainer.add_argument
+
+    def add_argument(self, *args, **kwargs):
+        if 'default' not in kwargs:
+            dest = kwargs.get('dest')
+            if dest is None:
+                for dest in args:
+                    dest = dest.lstrip('-')
+                    value = self.default.get(dest)
+                    if value is not None:
+                        break
+            else:
+                dest = dest.replace('_', '-')
+                value = self.default.get(dest)
+            if value is not None:
+                argument_type = kwargs.get('type')
+                if argument_type is not None:
+                    value = argument_type(value)
+                action = kwargs.get('action')
+                if action == 'store_true':
+                    value = value.lower() == 'true'
+                elif action == 'store_false':
+                    value = value.lower() != 'true'
+                if kwargs.get('nargs') == '*' and isinstance(value, str):
+                    value = value.split()
+                kwargs['default'] = value
+            elif dest == 'double-buffer':
+                kwargs['default'] = None
+        return original_method(self, *args, **kwargs)
+    _ActionsContainer.add_argument = add_argument
+
+    class Parser(ArgumentParser):
+        def __init__(self, *args, **kwargs):
+            self.default = kwargs.pop('default')
+            ArgumentParser.__init__(self, *args, **kwargs)
+
+        def add_argument_group(self, *args, **kwargs):
+            group = ArgumentParser.add_argument_group(self, *args, **kwargs)
+            group.default = self.default
+            group.add_argument_group = self.add_argument_group
+            group.add_mutually_exclusive_group = self.add_mutually_exclusive_group
+            return group
+
+        def add_mutually_exclusive_group(self, *args, **kwargs):
+            group = ArgumentParser.add_mutually_exclusive_group(self, *args, **kwargs)
+            group.default = self.default
+            group.add_argument_group = self.add_argument_group
+            group.add_mutually_exclusive_group = self.add_mutually_exclusive_group
+            return group
+
+    return Parser
+
+
+ArgumentParser = patch_argument_parser()
+
+
+def parse_config(section, defaults):
+    return Options(section, defaults)
 
 
 def parse_arguments(defaults):
-    parser = ArgumentParser(description='Libre reimplementation of the Touhou 6 engine.')
+    parser = ArgumentParser(description='Libre reimplementation of the Touhou 6 engine.', default=defaults)
 
-    parser.add_argument('data', metavar='DAT', default=defaults['data'], nargs='*', help='Game’s data files')
-    parser.add_argument('-p', '--path', metavar='DIRECTORY', default='.', help='Game directory path.')
+    parser.add_argument('data', metavar='DAT', nargs='*', help='Game’s data files')
+    parser.add_argument('-p', '--path', metavar='DIRECTORY', help='Game directory path.')
     parser.add_argument('--debug', action='store_true', help='Set unlimited continues, and perhaps other debug features.')
     parser.add_argument('--verbosity', metavar='VERBOSITY', choices=['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'], help='Select the wanted logging level.')
 
     game_group = parser.add_argument_group('Game options')
-    game_group.add_argument('-s', '--stage', metavar='STAGE', type=int, default=None, help='Stage, 1 to 7 (Extra), nothing means story mode.')
-    game_group.add_argument('-r', '--rank', metavar='RANK', type=int, default=0, help='Rank, from 0 (Easy, default) to 3 (Lunatic).')
-    game_group.add_argument('-c', '--character', metavar='CHARACTER', type=int, default=0, help='Select the character to use, from 0 (ReimuA, default) to 3 (MarisaB).')
+    game_group.add_argument('-s', '--stage', metavar='STAGE', type=int, help='Stage, 1 to 7 (Extra), nothing means story mode.')
+    game_group.add_argument('-r', '--rank', metavar='RANK', type=int, help='Rank, from 0 (Easy, default) to 3 (Lunatic).')
+    game_group.add_argument('-c', '--character', metavar='CHARACTER', type=int, help='Select the character to use, from 0 (ReimuA, default) to 3 (MarisaB).')
     game_group.add_argument('-b', '--boss-rush', action='store_true', help='Fight only bosses.')
-    game_group.add_argument('--game', metavar='GAME', choices=['EoSD'], default='EoSD', help='Select the game engine to use.')
-    game_group.add_argument('--interface', metavar='INTERFACE', choices=['EoSD', 'Sample'], default='EoSD', help='Select the interface to use.')
-    game_group.add_argument('--hints', metavar='HINTS', default=None, help='Hints file, to display text while playing.')
+    game_group.add_argument('--game', metavar='GAME', choices=['EoSD'], help='Select the game engine to use.')
+    game_group.add_argument('--interface', metavar='INTERFACE', choices=['EoSD', 'Sample'], help='Select the interface to use.')
+    game_group.add_argument('--hints', metavar='HINTS', help='Hints file, to display text while playing.')
 
     replay_group = parser.add_argument_group('Replay options')
     replay_group.add_argument('--replay', metavar='REPLAY', help='Select a file to replay.')
@@ -38,23 +121,23 @@ def parse_arguments(defaults):
     replay_group.add_argument('--skip-replay', action='store_true', help='Skip the replay and start to play when it’s finished.')
 
     netplay_group = parser.add_argument_group('Netplay options')
-    netplay_group.add_argument('--port', metavar='PORT', type=int, default=0, help='Local port to use.')
-    netplay_group.add_argument('--remote', metavar='REMOTE', default=None, help='Remote address.')
+    netplay_group.add_argument('--port', metavar='PORT', type=int, help='Local port to use.')
+    netplay_group.add_argument('--remote', metavar='REMOTE', help='Remote address.')
     netplay_group.add_argument('--friendly-fire', action='store_true', help='Allow friendly-fire during netplay.')
 
     graphics_group = parser.add_argument_group('Graphics options')
-    graphics_group.add_argument('--backend', metavar='BACKEND', choices=['opengl', 'sdl'], default=['opengl', 'sdl'], nargs='*', help='Which backend to use (opengl or sdl).')
-    graphics_group.add_argument('--fps-limit', metavar='FPS', default=-1, type=int, help='Set fps limit. A value of 0 disables fps limiting, while a negative value limits to 60 fps if and only if vsync doesn’t work.')
+    graphics_group.add_argument('--backend', metavar='BACKEND', choices=['opengl', 'sdl'], nargs='*', help='Which backend to use (opengl or sdl).')
+    graphics_group.add_argument('--fps-limit', metavar='FPS', type=int, help='Set fps limit. A value of 0 disables fps limiting, while a negative value limits to 60 fps if and only if vsync doesn’t work.')
     graphics_group.add_argument('--no-background', action='store_false', help='Disable background display (huge performance boost on slow systems).')
     graphics_group.add_argument('--no-particles', action='store_false', help='Disable particles handling (huge performance boost on slow systems).')
     graphics_group.add_argument('--no-sound', action='store_false', help='Disable music and sound effects.')
 
     opengl_group = parser.add_argument_group('OpenGL backend options')
-    opengl_group.add_argument('--gl-flavor', choices=['core', 'es', 'compatibility', 'legacy'], default='compatibility', help='OpenGL profile to use.')
-    opengl_group.add_argument('--gl-version', default=2.1, type=float, help='OpenGL version to use.')
+    opengl_group.add_argument('--gl-flavor', choices=['core', 'es', 'compatibility', 'legacy'], help='OpenGL profile to use.')
+    opengl_group.add_argument('--gl-version', type=float, help='OpenGL version to use.')
 
     double_buffer = opengl_group.add_mutually_exclusive_group()
-    double_buffer.add_argument('--double-buffer', dest='double_buffer', action='store_true', default=None, help='Enable double buffering.')
-    double_buffer.add_argument('--single-buffer', dest='double_buffer', action='store_false', default=None, help='Disable double buffering.')
+    double_buffer.add_argument('--double-buffer', dest='double_buffer', action='store_true', help='Enable double buffering.')
+    double_buffer.add_argument('--single-buffer', dest='double_buffer', action='store_false', help='Disable double buffering.')
 
     return parser.parse_args()