Ariane in Paradise is an adult oriented visual novel. This game is for ages 18+ By downloading, you declare you are over the age of 18.
Extract the zip file anywhere you want and run the EXE. Windows may give you a warning, select “more options” and “run anyways” the first time. You can create a shortcut to make it easier to launch.
Extract the zip file and open the .app file.
Install instructions included. Android is experimental and lower resolution, hence the lower price.