There is no official standalone plugin universally named "DEM Earth" like there is for "Octane" or "Redshift." Usually, users are searching for a free method to use DEM (Digital Elevation Model) files within C4D. Often, this refers to workflows using free scripts or older versions of terrain tools.
However, if you are searching for a "DEM Earth C4D plugin free download," there are a few critical things you should know about the software, the risks of "cracked" versions, and the legitimate ways to get high-quality terrain into your scenes. What is DEM Earth?