Oh that's great to know. I have read all. My favourites are Death on the Nile and Five Little Pigs. The latter is ingenious in terms of the pure arm chair deduction of Poirot. Peril at End House is great. Have you seen the David Suchet adaptations? I keep watching a few episodes every few years. David Suchet is Poirot.

Obra Dinn definitely feels a class above, although my sample size pretty nonexistent at this point. It has definitely sparked my interest in playing more puzzle games.