diff --git a/tgbot/kollagen-bot/main.py b/tgbot/kollagen-bot/main.py
index 2c105f3..22b3187 100644
--- a/tgbot/kollagen-bot/main.py
+++ b/tgbot/kollagen-bot/main.py
@@ -58,7 +58,7 @@ class KollagenBot:
             "-m",
             dest="mode",
             metavar="mode",
-            choices=self._get_modes(),
+            type=safe_str,
             nargs="?",
             const=True,
             help=f"Which collage mode to use. By default, one is chosen at random. When no value is specified, all modes are listed.",
@@ -84,6 +84,26 @@ class KollagenBot:
             default=640,
             help=f"Height of resulting output (in px). 640px by default.",
         )
+        parser.add_argument(
+            "--rm",
+            dest="recursive_modes",
+            type=safe_str,
+            help=f"Collage modes to use in a recursive collage. All by default.",
+        )
+        parser.add_argument(
+            "--rl",
+            dest="recursive_level",
+            type=int,
+            default=3,
+            help=f"Level/depth of recursive collage. 3 by default.",
+        )
+        parser.add_argument(
+            "--rr",
+            dest="recursive_repeat",
+            type=bool,
+            default=False,
+            help=f"Allow repeating images in recursive collages. False by default.",
+        )
         self.parser = parser
 
     def _get_modes(self):
@@ -134,6 +154,9 @@ class KollagenBot:
 
         mode = ["-m", args.mode] if args.mode else []
         num_images = ["-n", str(args.num_images)] if args.num_images else []
+        recursive_level = ["--rl", str(args.recursive_level)] if args.recursive_level else []
+        recursive_repeat = ["--rr"] if args.recursive_repeat else []
+        recursive_modes = ["--rm", str(args.recursive_modes)] if args.recursive_modes else []
 
         with NamedTemporaryFile(suffix=".png") as ntf:
             shell_cmd_line = [
@@ -145,6 +168,9 @@ class KollagenBot:
                 str(args.height),
                 *mode,
                 *num_images,
+                *recursive_level,
+                *recursive_repeat,
+                *recursive_modes,
                 "-o",
                 ntf.name,
             ]
diff --git a/tgbot/kollagen-bot/parser.py b/tgbot/kollagen-bot/parser.py
index ac5556b..40799f5 100644
--- a/tgbot/kollagen-bot/parser.py
+++ b/tgbot/kollagen-bot/parser.py
@@ -11,6 +11,6 @@ class SafeArgumentParser(argparse.ArgumentParser):
         raise ArgumentParserError(message)
 
 def safe_str(val: str):
-    if re.findall(r'[^\w]', val):
+    if re.findall(r'[^\w,]', val):
         raise RuntimeError("No special characters in arguments allowed!")
     return val
\ No newline at end of file