Agatha Christie - Hercule Poirot : The First Cases isn't an especially hard game, but it's quite pleasant to play so far. Time to do like Poirot where I saved, give the brain some sleep!
You have a first bunch of Agatha Christie's games from 2005 to 2010, most of which are Poirot-themed games, but unless you have physical releases on PC, Wii or DS (depending the game), they're not available anymore neither on Steam or on GOG.
Since 2016, it's what's called the "Microïds era", with : -"The ABC Murders" which has a classic 3D point click games style (finished it a couple of years ago, was a decent one) -"The First Cases" (the one I'm currently playing) and "The London Case" which are isometric view point'n click games, with "mind mapping" phases where you have to link together the clues you discover to advance in the game -And you have "Murder on the Orient Express", and the upcoming "Death on Nile" which are 3rd person point'n click, with similar mind maps phases, but the big difference is that they take the bet of modernising the context, as it's Poirot but in current days, and you play a second character. Haven't tried yet, but might take a look if there's a discount on it.