Better and more involved than it ever had any right to be. Before Crisis is, fore the most part, a long parade of fanservice, but it's a pretty good one. Grimoire Valentine on Youtube has a full playthrough with english subtitles, and I'd recommend that as your way to experience it. The RPG Maker "remake" looks absolutely hideous and doesn't retain any of the original's actual gameplay anyway. You'd might as well just look at the original.