Ok so, (I'm not the owner I just read this and wanted to help) you need to select the option 'Extract All' to unzip the folder; then open a new folder your pc has automatically created (it should appear in downloades as a recent one) and from in there select the file named after the game. That'll open a pop-up window (the game itself). Do tell if you don't understand how I've explained things, hope I was helpful.
Don't know why but this comment was in my notifications🤦just lemme know if you've got it! Bye,
HW