How to Install Mugen
M.U.G.E.N is not like most games, there is no installation process. The Mugen files are portable, which means that you can move all of the game files from one computer to another without most types of compatability problems. All that you need to do is download the mugen game, extract the files using compression software and you're ready to play.
To run mugen simply double click the exe file in the root directory. (e.g. c:\mugen\mugen.exe)
To exit mugen you can either press "esc" on the keyboard or select "exit" from the main screen. If you are using a mugen version older than 2009 then sometime it will leave behind a dos screen after exiting that you will need to manually close as well.