FAR (The Sims)
From Just Solve the File Format Problem
FAR is an archiving format used for game data files in The Sims. It has a field giving the format version, which is always 1 in all known files. It stores the length of each file twice, which has produced speculation that one of these is actually intended to be the compressed size, but no known files of this format use any sort of compression.
Magic bytes
The files start with FAR!byAZ
.