diff --git a/README.md b/README.md
index d9484b4..728513d 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ Chinese accounts are not currently supported. If there's enough interest for thi
 
 ### Are platforms besides Windows supported?
 
-Wishing Well is written in Python and could technically run on all major desktop operating systems. However, with the limitations introduced in Genshin Impact version 2.3 and 3.0, Wishing Well needs to run on the same PC you're playing Genshin Impact on. As such, running Wishing Well on Linux or macOS does not make much sense.
+Linux is supported _again_. This requires acess to the game files, however, for example by dual booting Windows and mounting your Windows drive when running Linux. You can then give Wishing Well the path to the game via an environment variable. For example: `GAME_PATH="/mnt/windows/Users/Ennea/Games/Genshin Impact/Genshin Impact game" python wishing-well.py`
 
 ## Thank you
 
diff --git a/wishing_well/client.py b/wishing_well/client.py
index 95c0f08..b719c6a 100644
--- a/wishing_well/client.py
+++ b/wishing_well/client.py
@@ -77,7 +77,7 @@ def _fetch_wish_history(self, banner_type, end_id=None):
                 # mihoyo's API will we get the UID for our auth token
                 if latest_wish_id is None:
                     latest_wish_id = self._database.get_latest_wish_id(wish['uid'], banner_type)
-                    logging.debug('Last wish id for banner type %d is %d', banner_type, latest_wish_id)
+                    logging.debug('Last wish id for banner type %d is %d', banner_type, latest_wish_id or 0)
 
                 # return when we reach the latest wish we already have in our history
                 logging.debug('Current wish id is %s. (%s - %s)', wish['id'], wish['time'], wish['name'])
diff --git a/wishing_well/util.py b/wishing_well/util.py
index 624f0fa..ff423e0 100644
--- a/wishing_well/util.py
+++ b/wishing_well/util.py
@@ -1,23 +1,38 @@
 import logging
 import os
 import re
+import shutil
 import socket
 import subprocess
 import sys
 import tkinter
 import webbrowser
-import winreg
 from pathlib import Path
 from tkinter import ttk
 from urllib.request import urlopen
 from urllib.error import URLError, HTTPError
 
+try:
+    import winreg
+except ModuleNotFoundError:
+    winreg = None
+
 
 def get_data_path():
     if sys.platform == 'win32':
         path = Path(os.environ['APPDATA']) / 'wishing-well'
+    elif sys.platform == 'linux':
+        if 'XDG_DATA_HOME' in os.environ:
+            path = Path(os.environ['XDG_DATA_HOME']) / 'wishing-well'
+        else:
+            path = Path('~/.local/share/wishing-well').expanduser()
+    elif sys.platform == 'darwin':
+        if 'XDG_DATA_HOME' in os.environ:
+            path = Path(os.environ['XDG_DATA_HOME']) / 'wishing-well'
+        else:
+            path = Path('~/Library/Application Support/wishing-well').expanduser()
     else:
-        show_error('Wishing Well only supports Windows.')
+        show_error('Wishing Well is only designed to run on Windows or Linux based systems.')
 
     # create dir if it does not yet exist
     if not path.exists():
@@ -31,19 +46,26 @@ def get_data_path():
 
 def get_cache_path():
     game_path = None
-    log_path = Path(os.environ['USERPROFILE']) / 'AppData/LocalLow/miHoYo/Genshin Impact/output_log.txt'
+    try:
+        game_path = Path(os.environ['GAME_PATH'])
+    except KeyError:
+        try:
+            log_path = Path(os.environ['USERPROFILE']) / 'AppData/LocalLow/miHoYo/Genshin Impact/output_log.txt'
+        except KeyError:
+            logging.debug('USERPROFILE environment variable does not exist')
+            return None
 
-    if not log_path.exists():
-        logging.debug('output_log.txt not found')
-        return None
+        if not log_path.exists():
+            logging.debug('output_log.txt not found')
+            return None
 
-    regex = re.compile('Warmup file (.+)/GenshinImpact_Data')
-    with log_path.open('r') as fp:
-        for line in fp:
-            match = regex.search(line)
-            if match is not None:
-                game_path = match.group(1)
-                break
+        regex = re.compile('Warmup file (.+)/GenshinImpact_Data')
+        with log_path.open('r') as fp:
+            for line in fp:
+                match = regex.search(line)
+                if match is not None:
+                    game_path = match.group(1)
+                    break
 
     if game_path is None:
         logging.debug('game path not found in output_log')
@@ -54,13 +76,17 @@ def get_cache_path():
     # windows copy command, so we instead delegate this task to powershell's Copy-Item
     try:
         path = Path(game_path) / 'GenshinImpact_Data/webCaches/Cache/Cache_Data/data_2'
-        logging.debug('Cache path is: ' + str(path))
+        logging.debug('cache path is: ' + str(path))
         if not path.exists():
+            logging.debug('cache file does not exist')
             return None
 
         copy_path = get_data_path() / 'data_2'
-        subprocess.check_output(f'powershell.exe -Command "Copy-Item \'{path}\' \'{copy_path}\'"', shell=True)
-    except (FileNotFoundError, subprocess.CalledProcessError) as e:
+        if sys.platform == 'win32':
+            subprocess.check_output(f'powershell.exe -Command "Copy-Item \'{path}\' \'{copy_path}\'"', shell=True)
+        else:
+            shutil.copyfile(path, copy_path)
+    except (FileNotFoundError, subprocess.CalledProcessError, OSError):
         logging.error('Could not create copy of cache file')
         return None