--- a/share/hedgewars/Data/Scripts/Multiplayer/Tunnels.lua	Sun Feb 23 13:47:15 2014 -0500
+++ b/share/hedgewars/Data/Scripts/Multiplayer/Tunnels.lua	Sun Feb 23 13:49:44 2014 -0500
@@ -22,6 +22,9 @@
      end
  end
 
+function onPreviewInit()
+onGameInit()
+end
 
 function onGameInit()
     MapGen = 2