A very good fan tribute to the NES trilogy of iCOM Macventures (Deja Vu, Shadowgate, Uninvited). The music especially is "authentic" in this regard, though the game looks, plays, and feels like a long lost fourth game, albeit one with slightly higher quality graphics. It's a bit short, and it has a few rough patches here and there (some typos, some minor interface quirks), but it's well worth a download and playthrough. I consider it part of the iCOM canon. Definitely check this one out if you're a fan of these kinds of games, but be sure to check out Spectacle as well while you're at it.