Hi I was wondering if anyone  can help me out, Its my first time downloading a file for a game and I'm confused on how I'm meant to play the game after I've downloaded the file.  Id be very grateful for any help.

...Have you tried double-clicking the file? Windows has been able to open them for a long time.

1. Right click on the file. Choose Extract All.
2. Once extracted, go to the folder. If you have an anti-virus, let it check the folder.  (right click the folder - select "Scan with..."
3. Once that is done, look for a file that ends in .exe - double click that.
4. You'll most likely see a blue popup - Windows has protected you - click on more info - click on allow this app.
5. Play.

Easier option: download theitch.io app and let it handle this process for you.