The Librarians
1, 2, &
3. They are like exact adventure games of generic mystery / religious artifact type of game. Especially the third, which more than most likely was inspired Gabriel Knights 1 & 3 (vampires in New Orleans, Marie Laveau's tomb, The Wandering Jew.) The first shows the low budget it had and also it's a bit childish, but the second one (with King Solomon's mines) is already a lot better and the third one is good fun. Now waiting for the fourth part.