If you use Google’s web browser Chrome, you might notice that Unity games embedded in web pages no longer work as of the latest update. In order to play Unity Games, you must use Firefox or Internet Explorer browser....
To download Firefox browser, you need to go here and hit the download button.
If you need any help, have any question, just ask. I could shoot a video about how to install it on your PC or something.
Sorry for inconvenience, but it's not my fault :(