itch.io

It isn't that simple Your best bet is using an android emulator 

Check the Dev logs They aren't doing PC no more 
https://m0dgames.itch.io/granny-multiplayer/devlog/915279/granny-multiplayer-no-more-pc-updates

to play in full screen you have to install the itch app then download the game then play f10 to play full screen I hope this helps anyone