They're all basically point and clicks with the moon logic removed. Puzzles are still good brain teasers but don't stop the stories in their tracks.
I'd highly recommend Technobabylon, Shardlight, and Primordia. The Blackwell series is uneven, but it's worth it for the last game, Epiphany. The Shivah is interesting for the concept of a rabbi solving murders, but only if you don't mind a clunkier interface closer to old Lucas Arts style games.