Tech demo. The prologue is incredibly effective and serves as a great intro to where MGSV is headed. But man, $30-40 dollars for a tech demo? It's $20 now and still feels a bit steep. Should be $15 max. The extra side op shit is actually pretty good and gives you more time with the gameplay, and the cassette tapes and extra ops increase the demo's longevity, but the bottom line is there's really only one mission, Konami sold it as a standalone product, and it was priced at $30 for the longest time. It's good but there's not a lot to it.