The uninstall procedure varies with the version of Windows but find it on the Control Panel reached from the Start button (usually at the bottom left of your screen). Make sure you are not running MatchMaker when you uninstall.
If you have installed an earlier version, uninstall it before installing Version 2.3.1.
When you uninstall MatchMaker Version 2.0, or if you have installed while MatchMaker or Quiz was running, there may be files created by the program that are left over. You can remove these manually, although the program will work if you skip this step.
If you have added your own species, changed species names, or edited descriptions or data, and you wish to retain these changes, the information needed is contained in the files MatchMaker_Added.txt, MatchMaker_Added.dta, MatchMaker_Deleted.txt, MatchMaker_Renamed.txt, MatchMaker_Edited.txt, and MatchMaker_Changed.dta. Contact the authors about the best way to use these files, as there is no automatic process.
Otherwise, you can delete these folders (if present):
This is easiest to do using the program File Explorer in Windows 10 (the icon on the task bar that looks like a folder). On previous versions, you may use Windows Explorer, found under Accessories under All Programs on the Start menu, or the My Computer program (called Computer in some versions) on the Start Menu. One of these programs may already be on your desktop.
If you have Version 1.31 (or before) installed on Windows Vista or Windows 7, uninstalling that version of MatchMaker might leave leftover files in the folder
Eli Gibson designed the background image.
which is a collage of photographs by
Michael Beug, Cy and Mary Hampson, Boleslaw Kuznik,
Michael Wood (MykoWeb), Richard Winder, and Eileen Seto.