I would like my old version back because the tiles are easier for me to see. Some of the newer versions of Mahjong have very pale colours and undefined tile edges and makes it difficult to differentiate tiles when playing.
Windows 7 Classic Games for Windows 10
http://www.groovypost.com/howto/install-windows-7-classic-games-windows-10/
Shortcut to download page
http://winaero.com/download.php?view.1836
Click on: Download Windows 7 games for Windows 10
Note: A Windows Update such as the Anniversary Update may cause the games to not function. If that happens, remove the zip file and extracted files, reboot and reinstall it. In case the download page somehow disappears from the Internet, I would advise saving a copy of the zip file to an external device such as a DVD.