diff --git a/MultiMystery.py b/MultiMystery.py
index 15a041f7..fc1a7167 100644
--- a/MultiMystery.py
+++ b/MultiMystery.py
@@ -91,7 +91,7 @@ if __name__ == "__main__":
         elif os.path.exists("BerserkerMultiServer"):
             basemysterycommand = "BerserkerMystery" # compiled linux
         else:
-            basemysterycommand = f"py -{py_version} Mystery.py" #source
+            basemysterycommand = f"py -{py_version} Mystery.py"  # source
 
         command = f"{basemysterycommand} --multi {len(player_files)} {player_string} " \
                   f"--rom \"{rom_file}\" --enemizercli \"{enemizer_path}\" " \
@@ -101,6 +101,8 @@ if __name__ == "__main__":
             command += " --create_spoiler"
             if create_spoiler == 2:
                 command += " --skip_playthrough"
+        if zip_diffs:
+            command += " --create_diff"
         if race:
             command += " --race"
         if os.path.exists(os.path.join(player_files_path, meta_file_path)):
@@ -108,9 +110,10 @@ if __name__ == "__main__":
 
         print(command)
         import time
+
         start = time.perf_counter()
         text = subprocess.check_output(command, shell=True).decode()
-        print(f"Took {time.perf_counter()-start:.3f} seconds to generate rom(s).")
+        print(f"Took {time.perf_counter() - start:.3f} seconds to generate multiworld.")
         seedname = ""
 
         for segment in text.split():
@@ -161,25 +164,29 @@ if __name__ == "__main__":
             ipv4 = (host if host else get_public_ipv4()) + ":" + str(port)
 
 
-            def _handle_file(file: str):
-                if zip_diffs:
-                    # the main reason for using threading, the patch is created using bsdiff4, which frees the GIL
-                    diff = os.path.split(create_patch_file(os.path.join(output_path, file), ipv4))[1]
-                    pack_file(diff)
-                    if zip_diffs == 2:
-                        remove_zipped_file(diff)
+            def _handle_sfc_file(file: str):
                 if zip_roms:
                     pack_file(file)
                     if zip_roms == 2 and player_name.lower() not in file.lower():
                         remove_zipped_file(file)
 
 
+            def _handle_diff_file(file: str):
+                if zip_diffs > 0:
+                    pack_file(file)
+                    if zip_diffs == 2:
+                        remove_zipped_file(file)
+
+
             with concurrent.futures.ThreadPoolExecutor() as pool:
                 futures = []
                 with zipfile.ZipFile(zipname, "w", compression=compression, compresslevel=9) as zf:
                     for file in os.listdir(output_path):
-                        if file.endswith(".sfc") and seedname in file:
-                            futures.append(pool.submit(_handle_file, file))
+                        if seedname in file:
+                            if file.endswith(".sfc"):
+                                futures.append(pool.submit(_handle_sfc_file, file))
+                            elif file.endswith(".bmbp"):
+                                futures.append(pool.submit(_handle_diff_file, file))
 
                     if zip_multidata and os.path.exists(os.path.join(output_path, multidataname)):
                         pack_file(multidataname)
diff --git a/Mystery.py b/Mystery.py
index dc89e4b2..7c08377e 100644
--- a/Mystery.py
+++ b/Mystery.py
@@ -40,6 +40,7 @@ def mystery_argparse():
     parser.add_argument('--meta', default=None)
     parser.add_argument('--log_output_path', help='Path to store output log')
     parser.add_argument('--loglevel', default='info', help='Sets log level')
+    parser.add_argument('--create_diff', action="store_true")
     parser.add_argument('--yaml_output', default=0, type=lambda value: min(max(int(value), 0), 255),
                         help='Output rolled mystery results to yaml up to specified number (made for async multiworld)')
 
@@ -93,6 +94,7 @@ def main(args=None, callback = ERmain):
     erargs.seed = seed
     erargs.name = {x: "" for x in range(1, args.multi + 1)} # only so it can be overwrittin in mystery
     erargs.create_spoiler = args.create_spoiler
+    erargs.create_diff = args.create_diff
     erargs.race = args.race
     erargs.skip_playthrough = args.skip_playthrough
     erargs.outputname = seedname
diff --git a/host.yaml b/host.yaml
index 6d6931d4..1956199c 100644
--- a/host.yaml
+++ b/host.yaml
@@ -71,7 +71,7 @@ multi_mystery_options:
   #1 -> Create a zip
   #2 -> Create a zip and delete the ROMs that will be in it, except the hosts (requires player_name to be set correctly)
   zip_roms: 0
-  # zip diff files, 2-> delete the non-zipped one. Note that diffs are only created if they are placed in a zip.
+  # zip diff files, 2 -> delete the non-zipped one. -1 -> create them without zipping
   zip_diffs: 2
   #include the spoiler log in the zip, 2 -> delete the non-zipped one
   zip_spoiler: 0