We love the Gabriel Knight series, but Blood of the Sacred, Blood of the Damned is the kind of game only a parent could love. It follows Knight's adventures in France as he tries to solve a kidnapping case that involves the Holy Grail and a set of vampires called "The Night Visitors".
What makes Gabriel Knight 3 such a dicey proposition to play is its questionable presentation. Sierra forced Jane Jensen and her team to make the game fully 3D, which they were neither equipped to accomplish, nor comfortable doing. So it's a technical nightmare that plays very awkwardly, and it gets in its own way. The highs remain quite high, since this series uniquely captures the feeling of being a detective investigating a case. It's just... very difficult to recommend.