DBPF

This file contains the files used by the game, they often end in .dat, .SC4Lot, .SC4Model, and .SC4Desc, they can also have a file extension of .sav which are usually backups made by the various modding and custom content creation tools, they soemtimes cause issues if they are loaded after other dats, and shouldn't be included in downloads(there are of course exceptions). The file format for all SC4 plugin types

the first 4 bytes are always the characters DBPF.