Supports maps with dimensions of 216 x 216.

Nuclear explosion? It didn't generate a single map with such a barren layout for me. Perhaps you edited the .rmg file in the archive? rmg.txt (6792 bytes, 01/27/2010 19:14:58) Try different templates. If you're going to edit the .rmg.txt file, a regular text editor won't do – I recommend opening it in Excel. If that doesn't help, describe your actions and specify the game version.