diff --git a/pyenliven/__init__.py b/pyenliven/__init__.py
index 0e9d332..e5517a5 100644
--- a/pyenliven/__init__.py
+++ b/pyenliven/__init__.py
@@ -87,6 +87,7 @@ MY_MODULE_DIR = os.path.dirname(os.path.realpath(__file__))
 # ^ realpath follows symlinks
 REPO_DIR = os.path.dirname(MY_MODULE_DIR)
 MODS_STOPGAP_DIR = os.path.join(REPO_DIR, "patches", "mods-stopgap")
+PATCHES_SUBGAME_DIR = os.path.join(REPO_DIR, "patches", "subgame")
 if not os.path.isdir(MODS_STOPGAP_DIR):
     echo0("Error: \"{}\" is missing.".format(MODS_STOPGAP_DIR))
     exit(1)
diff --git a/pyenliven/gamebuilder.py b/pyenliven/gamebuilder.py
index 0ab337f..5405647 100644
--- a/pyenliven/gamebuilder.py
+++ b/pyenliven/gamebuilder.py
@@ -7,7 +7,7 @@ from typing import Dict
 
 from git import Repo
 
-from pyenliven import MODS_STOPGAP_DIR, echo0
+from pyenliven import MODS_STOPGAP_DIR, PATCHES_SUBGAME_DIR, echo0
 from pyenliven.metadata import (
     BASE_ENLIVEN_CONF_SETTINGS,
     gamespec,
@@ -190,6 +190,31 @@ class GameBuilder:
         update_conf(path, new_settings)
         # desired_set = {line.strip() for line in desired_lines if line.strip()}
 
+    def apply_subgame_patch(self, name, src_parent=None, level=0):
+        if src_parent is None:
+            src_parent = os.path.join(PATCHES_SUBGAME_DIR, name)
+        dst_parent = os.path.join(self.target_game, name)
+        if os.path.isdir(src_parent):
+            for sub in os.listdir(src_parent):
+                src = os.path.join(src_parent, sub)
+                dst = os.path.join(dst_parent, sub)
+                if os.path.isdir(src):
+                    if not os.path.isdir(dst):
+                        os.makedirs(dst)
+                    self.apply_subgame_patch(
+                        os.path.join(name, sub),
+                        src_parent=src,
+                        level=level+1)
+                    continue
+                if os.path.isfile(dst):
+                    os.remove(dst)
+                shutil.copy(src, dst)
+        else:
+            logger.warning(f"There is no {src_parent},"
+                           " so the icon and header will not be patched.")
+        # if level == 0:
+        echo0(f"Applied overwrite-based patch:\n-{dst_parent}\n+{src_parent}")
+
     def build(self, conf_path: str = None):
         self.prepare_target()
         self.apply_remove_list()
@@ -201,6 +226,7 @@ class GameBuilder:
             conf_path = os.path.join(self.target_game, "minetest.conf.enliven")
 
         self.update_conf(conf_path)
+        self.apply_subgame_patch("menu")
 
         echo0("\nBuild finished.")
         echo0(f"Game location: {self.target_game}")