diff --git a/GDProfileFix.py b/GDProfileFix.py
new file mode 100644
index 0000000..4c70db7
--- /dev/null
+++ b/GDProfileFix.py
@@ -0,0 +1,76 @@
+# -*- coding: utf-8 -*-
+
+import base64
+import os
+import shutil
+import struct
+import time
+import zlib
+
+saves = ['CCGameManager.dat', 'CCLocalLevels.dat']
+
+if __name__ == '__main__':
+    os.chdir(os.getenv('localappdata') + '\\GeometryDash\\')
+
+    print('Geometry Dash Profile Fix v0.1 by WEGFan')
+    print()
+    print('This tool can fix most problems caused unable to open the game by the save files.')
+    print('(double clicking the game won\'t bring up any window, but moving the save files to other folders can open the game)')
+    print('If you encounter any problem (unable to fix / doesn\'t work after fixed), feel free to create an issue.')
+    print('Save files location:' + os.getcwd())
+    print()
+
+    # backup original file
+    bakFolder = f'backup-{int(time.time())}'
+    os.mkdir(bakFolder)
+    for saveFile in saves:
+        try:
+            shutil.copyfile(saveFile, bakFolder + '\\' + saveFile)
+        except:
+            pass
+    print('Save files backed up to ' + os.getcwd() + '\\' + bakFolder)
+    print()
+
+    input('Press Enter to fix...')
+    print()
+
+    for saveFile in saves:
+        try:
+            with open(saveFile, 'rb') as f:
+                saveData = f.read()
+
+            # decrypt
+            decrypted = []
+            for i in saveData:
+                decrypted.append(i ^ 11)
+
+            decryptedString = bytearray(decrypted).decode().replace('-', '+').replace('_', '/')
+            decodedByteArray = base64.b64decode(decryptedString.encode())
+            finString = zlib.decompress(decodedByteArray[10:], -zlib.MAX_WBITS).decode()
+
+            # fix (i don't know why simply add spaces works...)
+            fixed = finString.replace('><', '> <', 50)
+
+            # encrypt
+            fixedByteArray = fixed.encode()
+
+            compressedData = zlib.compress(fixedByteArray)
+            crc32 = struct.pack('I', zlib.crc32(fixedByteArray))
+            dataSize = struct.pack('I', len(fixedByteArray))
+
+            compressed = b'\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\x0b' + compressedData[2:-4] + crc32 + dataSize
+            encodedByteArray = base64.b64encode(compressed).decode().replace('+', '-').replace('/', '_').encode()
+
+            encrypted = []
+            for i in encodedByteArray:
+                encrypted.append(i ^ 11)
+            result = bytearray(encrypted)
+
+            with open(saveFile, 'wb') as f:
+                f.write(result)
+        except FileNotFoundError:
+            print('Can\'t find ' + saveFile + '!')
+        except:
+            print('There was an issue fixing ' + saveFile + '!')
+    print()
+    input('Done! Press Enter to exit...')
diff --git a/README.md b/README.md
index 2fd9c8a..c785a97 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,8 @@
-# Geometry-Dash-Profile-Fix
\ No newline at end of file
+# Geometry Dash Profile Fix
+
+This tool can fix most problems caused unable to open the game by the save files. (double clicking the game won't bring up any window, but moving the save files to other folders can open the game)
+
+If you encounter any problem (unable to fix / doesn't work after fixed), feel free to create an issue.
+
+*****
+Decrypter code downloaded from https://pastebin.com/JakxXUVG by [Absolute Gamer](https://absolllute.com/)
\ No newline at end of file