This directory contains the following files:

File Description
clue_setup.exe Windows installer. Double click to install database.
cluer.zip Zip file containing Mac version. After unzipping, you need to keep the data files in the same directory as the application.
linux.tgz Linux version (from 10/2013). After untarring, the executable is called cluer.
clues.bz2 Raw clue database, bzipped (updated infrequently)