This article has covered the Professor Layton Games in chronological order, starting with Professor Layton and the Last Spectre.
Professor Layton and the Convoluted Timeline by Linksliltri4ce on DeviantArt
Professor Layton and the Diabolical Box, Professor Layton Wiki
Finally completed my Layton collection :) I'm technically missing the bluray version of the film but it is what it is. Now it's time to actually finish them. : r/3DS
Professor Layton OST - All Title Themes (V.2 Lady Layton)
Every Professor Layton Game Ranked
The Complete List of Professor Layton Games in Chronological & Release Order - Cheat Code Central
Professor Layton: Things You Dind't Know About The Series
Chapter 11: The Time Machine Facility, Professor Layton Wiki
🎩TIMELINE Professor Layton: in what ORDER to play the saga?