.SC4Model (User created building models for SimCity 4)
.SC4Lot (User created lots for SimCity 4)
.SC4 (Savegame file provided with SimCity 4, User created savegame files for SimCity 4)
.Package (Data provided with The Sims 2, user downloadable plugins/mods for The Sims 2, data files for SPORE, data files for The Sims 3 and data files for SimCity)
.db (internal use in games such as Tetris Blitz)
In most cases, DBPF files are not named with a .dbpf extension; one can determine that the file is a DBPF file by looking at its header in a hex editor. The first four bytes in ASCII of every DBPF file read DBPF.