This is a port from the PSP and the diff apart of some redraw cgi scenes they removed completely the Hentai scenes

It's the Directors Cut version of Fate/Stay Night that replaced the sex scenes with scenes the creator actually prefers.

It's a Visual Novel, an old one at that. Besides Type Moon doesn't usually put protection on their games so this is to be expected

This remaster is based on Realta Nua which is the director's cut of Fate/Stay Night (what Nasu actually wanted it to be). The sex scenes were never something Nasu wanted and were only put in to boost sales.