Buy Grand Theft Auto: The Trilogy – The Definitive Edition on sale (usually $29.99, often drops to $19.99). Or, buy a cheap CD key for the Original version on a key reseller site (use PayPal for buyer protection).

To find a live directory, you would typically use a query like this on Yandex, Bing, or a dedicated "dork" search engine:

When a web server administrator misconfigures their security settings (or intentionally sets up a public file server), they disable the default "index.html" page. Instead of loading a fancy homepage, the server lists every file and sub-folder inside that directory in plain text.