Compressed version is just version with a lot more compressed images.
We usually made such versions for android before, but now we made them for other platforms as well.
The size difference: usual - 6.76 GB / compressed - 1.55 GB
Wait so for the update for better quality images a person has to download the 6.76GB
Well, yeah.
Lower size = Somewhat lower image quality (like on android) = Compressed version (1.55 GB)
Higher size = Somewhat higher image quality = Usual version (6.76 GB)
There is a tool on Itch called Butler where there is quite a significant upload limit from 1 or 2GB to 32GB although it is a command line tool