To install the Mod for "Single Again" you have to:
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1. Install the base game first

2. download and extract the Mod archive in a temporary folder

3. move the extracted files and the subfolders into your game folder   (...\game\)


That´s it.



There should be now a Mod button in the games quick menu
and also another one in the game settings/preferences

You also can activate the Mod menu while playing a game 
when pressing "Shift" +"k" on PC's.



Yours
KoGa3