--- a/share/hedgewars/Data/map_templates.yaml	Tue Sep 03 11:16:52 2024 +0200
+++ b/share/hedgewars/Data/map_templates.yaml	Tue Sep 03 13:56:35 2024 +0200
@@ -2159,8 +2159,14 @@
 
 
 template_types:
-  small: [39, 40, 42]
-  medium: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 46]
-  large: [18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 43]
-  cavern: [36, 2, 3, 21, 29, 45]
-  wacky: [37, 38, 41, 43, 44]
+  small:
+    indices: [39, 40, 42]    
+  medium:
+    indices: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 46]
+  large:
+    indices: [18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 43]
+  cavern:
+    indices: [36, 2, 3, 21, 29, 45]
+    force_invert: true
+  wacky:
+    indices: [37, 38, 41, 43, 44]