An mre file extension is related the SnowBoxN and used for its 3D-model files.
MRE file extension - SnowBoxN data
What is mre file? How to open mre files?
File type specification:
The mre file extension is used for files generated by SnowBoXN.
ShowBoxN is a separate software application that is used to export 3D-models created in a third party format into *.mrb files, the format that is used by WiCED.
This mre file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.