Before the game's release, it was being promoted through an ongoing campaign, which had people solve puzzles in the real world all around the globe. During this campaign, it was possible to obtain items that could be transferred to the actual game once it was released.
Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy was released for Nintendo 3DS, iOS, and Android in 2017, and a Nintendo Switch port, titled Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy DX, was released in Japan on August 9, 2018.
Gameplay Changes Edit
- On iOS/Android, since the entire screen is touch sensitive, including the "top" screen, you can simply tap the places to investigate directly, instead of moving the magnifying glass over to it.
- This is similar to how the Professor Layton games worked on the Nintendo DS.
- The magnifying glass from the 3DS games is also still present; allowing the player to choose between both styles.
- You can now revisit previous cases at any time.
- Once a case is solved, revisiting it will show how many puzzles are left to solve and how many hint coins are left to find. The map will also highlight all locations where everything has been solved/found.
- Some puzzles will only appear after the case has been solved.
- Due to this mechanic; it is now impossible to miss any puzzles. As such, Granny Riddleton is now a regular character; though she still occasionally gives a puzzle of her own.
- Multiple cases may unlock at once, and can be solved in any order.
- Some spots now hide ten hint coins instead of just one. If one of these spots is tapped, all coins will fly out simultaneously as a fountain.
- Picarats will now be removed for up to four incorrect answers, instead of two.
Major Characters Edit
- Katrielle Layton, detective and daughter of Professor Hershel Layton
- Sherl, Katrielle's assistant talking dog
- Ernest Greeves, Katrielle's assistant
- Emiliana Perfetti, a criminal profiler working at Scotland Yard, and a rival of Katrielle's
- Inspector Ercule Hastings, an enthustiastic inspector at Scotland Yard
The Seven Dragons Edit
- Madame Gretchin Doublée, the leader of the Seven Dragons who has many successful businesses across London
- Mayor Pipper Lowonida, mayor of London who has a passion for festivals
- Phineas T. Barnone, owner of many entertainment establishments, including the Saveloy Theatre
- Liza Wight, the youngest of the Seven Dragons, who inherited her money after her parents' untimely death
- Grant Sloanes, owner of the Layman's Reserve bank, among other businesses
- Cesar Chance, owner of the London Times as well as other media companies, whose alter ego Ratman, the masked 'powermouse' superhero, has been protecting Londoners from crime
- Mustafa Fullhold, owner of Bountiful Holdings, a ship building and shipping business, and the Thametanic
Minor/Recurring Characters Edit
- Granny Riddleton
- Dean Delmona
- Douglas Dert, a reporter
- PC Beate
- DC Nick Booker
- Gudrun Weldon
- Hans Lipski, Aleks' twin brother and Big Ben engineer
- Aleks Lipski, Hans' twin brother and a baker
- Seán Butchin
- An unnamed waiter
- Bo Bells
- Benni, from San Grio
- Bob Bracket
- Patch, a cat
- Clover Pryce, owner of The Lucky Clover
- Ambassador Fouxdufàfà, a foreign diplomat
- Vic & Tim, two lovers
- Hessie Tate, Mayor Lowonida's secretary
- Stripey, another cat
- Keane Fisher, a fisherman
- Felicity Hastings, Inspector Hasting's wife
- Hayes, an usher at the Saveloy Theatre
- Maverick D. Rector, a famous director
- Seymour Fraymes, a projectionist at the Saveloy Theatre
- The Major, Seymour's talking bird
- Eddie Torre, a film editor and longtime collaborator of D. Rector
- An unnamed maid, who works in Madame Doublée's residence
- Rex, Madame Doublee's pet iguana
- Yapper, a dog
- Wooooster, butler to the Wight residence
- Bianca Teller, general manager of the Layman's Reserve bank
- An unnamed Security Guard, working in the Layman's Reserve bank
- Shadee, a Gressenheller University student
- Taboras Lloyd, chief editor at the London Times and childhood friend of Cesar Chance
- Ratboy, a young boy who is obsessed with the superhero Ratman
- Mo Heecan, a reformed thug
- Mrs Slow, the tailor in Bowlyn Hill
- Captain Midas Pullman, captain of the Thametanic
- Abel Seamon, navigator of the Thametanic
- Declan Swabber, engineer on the Thametanic
- Dr Gene Ohm, a researcher of genetically engineered plants at Gressenheller University
- Billy Kidd, a student at Gressenheller University who looks after the goats in the university
- Chief Inspector Royall Britannias, a chief inspector at Scotland Yard who has a fierce rivalry with Inspector Hastings
Downloadable Content Edit
|1||Dating Dress & Puzzle||€1.89/$1.99|
|2||Equestrian Ensemble & Puzzle||€1.89/$1.99|
|3||Cardinal Cape Coat & Puzzle||€1.89/$1.99|
|4||Monotone Minidress & Puzzle||€1.89/$1.99|
|5||Retro Refit & Puzzle||€1.89/$1.99|
|6||Sky-blue Statement & Puzzle||€1.89/$1.99|
|7||Pleated Pleaser & Puzzle||€1.89/$1.99|
|8||Denim Daily & Puzzle||€1.89/$1.99|
|9||Imperial Elegance & Puzzle||€1.89/$1.99|
|10||Picnic Blanket Wrap & Puzzle||€1.89/$1.99|
|11||Daddy's Girl & Puzzle||€1.89/$1.99|
|12||Luke Lookalike & Puzzle||€1.89/$1.99|
|13||Emmy Impersonation & Puzzle||€1.89/$1.99|
|14||Anton-ish Attire & Puzzle||€1.89/$1.99|
|15||Aurora Again & Puzzle||€1.89/$1.99|
|16||Floral Finesse||Free (3DS)|
|17||Professor Layton cushion||Free (3DS)|
|Total (if bought individually)|| €28.35/$29.85 (mobile app version)|
$9.95 (For #11-15 in the 3DS version)
|Kat's Clobber & Puzzles Set (1-10)||€16.99/$22.46|
|Kat's Cosplay & Puzzles Set (11-15)||€7.49/$7.99|
|Total (if bought as packs)|| €24.48/$32.37 (mobile app version)|
$7.99 (For the Cosplay Set in the 3DS version)
- Prologue: Lady and a Tramp
- Case 1: The Hand That Feeds
- Case 2: Murder on the Thames
- Case 3: The Stolen Kiss
- Case 4: Pet Pandemonium
- Case 5: Ghost Busted
- Case 6: An Unexpected Windfall
- Case 7: Ratman Returns
- Case 8: The Goddess of the Thames
- Case 9: The Battle of Hastings (Originally: Hastings Off the Beat)
- Case 10: The Importance of Being Ernest
- Case 11: Katrielle Layton: WANTED!
- Case 12: Diamonds Aren't Forever (Originally: The Million Pound Puzzler)
See: Layton Museum
This is the page that shows what you can unlock with points from the museum.
Prologue: Lady and a Tramp Edit
Case 1: The Hand That Feeds Edit
Case 2: Murder on the Thames Edit
London's "Riverside Festival", a special event where two lovers confess their love to each other on opposite sides of the River Thames, is underway. However, right before the last day of the event, two such lovers meet an unnatural death right after confessing in a manner connected to the mysterious legend that started the event in the first place.
Case 3: The Stolen Kiss Edit
Ernest tells Katrielle and Sherl that he has won some tickets for a movie premiere in the nearby Saveloy Theatre. Katrielle and Ernest decide to attend; but just as the movie is about to reach its climatic kiss scene, it turns out the scene has been stolen!
Case 4: Pet Pandemonium Edit
Case 5: Ghost Busted Edit
Katrielle is invited by Liza Wight to her residence to investigate on ghosts that appear to be haunting the mansion.
Case 6: An Unexpected Windfall Edit
Case 7: Ratman Returns Edit
Case 8: The Goddess of the Thames Edit
As a thanks for their previous help, Katrielle, Ernest, and Sherl are all invited on a luxury cruise on the Thametanic. Once aboard, the owner of the ship, Mustafa Fullhold decides to entertain the guests with a treasure hunt around the ship where they have to find little statues of the Goddess of the Thames. But when the main prize, a fully sized golden statue worth millions, goes missing, Katrielle is tasked with finding it back.
Case 9: The Battle of Hastings Edit
On Godwin's day, a local holiday, Katrielle is enjoying a day without work. Suddenly, Inspector Hastings enters the Detective Agency and tells Katrielle that it is his wife's birthday and that he forgot all about it, and begs Kat to help him find a suitable present despite every shop being closed.
Case 10: The Importance of Being Ernest Edit
Sherl is having a talk with Ernest about why the latter is so willing to work for Katrielle despite not being paid. Ernest then tells him the story of when he once was accused of theft, and how Katrielle managed to prove his innocence.
Case 11: Katrielle Layton: WANTED! Edit
Katrielle is accused of murdering Clover Pryce and it is up to her to clear her name and catch the real killer.
Case 12: Diamonds Aren't Forever Edit
- Main article: Gallery:Layton's Mystery Journey
- Akihiro Hino (LEVEL-5 CEO) stated in a Famitsu article that LEVEL-5's reason for creating a female protagonist was because more than half of all players of the Professor Layton series were female, and selected a female protagonist to appeal more to players.
- Additionally, the reason for a new protagonist over Hershel Layton was because of an belief that the Layton series had strayed from its roots in recent previous entries, which featured "overblown" stories like saving the world, and a desire to bring the series back to its core principles. This resulted in going from Hershel to having his daughter as the protagonist, as the team felt that they can't "bring back a guy who's saved the world and have him go do things like find a missing cat".
- The game contains a glitch where the play time will suddenly display "99 h 59 min" of play time. If the game is saved when the glitch occurs; the save screen will show the time as either "0:00" or completely blank.
- In some cases, fully quiting the game and reloading the glitched save file will restore the proper time. Some people have also managed to restore their times by uploading it to the LEVEL-5 ID service and re-downloading it.
- It is unknown what causes this glitch to happen.
- The 3DS version of the game does not have any 3D effects, unlike most 3DS games. Adjusting the 3D slider on the system has no effect.
- This is the first Layton title to be released on the Nintendo Switch.
- The second case, Murder on the Thames, shares a name with Annie Dretche's famous mystery novel.
- Official Japanese website
- Official English website
- Google Play Store (Japan)
- Google Play Store (North America)
- Google Play Store (Europe)
- iTunes Store
- ^ Prices may differ according to region; even with the same currency.
- ^ Layton's Mystery Journey 3DS release confirmed for October 6 in North America - Nintendo Everything
- ^ The renowned Layton series returns to Nintendo 3DS as LAYTON'S MYSTERY JOURNEY™: Katrielle and the Millionaires’ Conspiracy launches on 6th October - Nintendo UK
- ^ a b Layton’s Mystery Journey, formerly Lady Layton, launches for 3DS in Japan and smartphones worldwide on July 20 - Gematsu
- ^ New Titles Announced at “LEVEL-5 Vision 2016: New Heroes” Event - LEVEL-5 International America
- ^ New Level-5 trademarks include 'Lady Layton,' two more Yo-kai Watch games - Destructoid
- ^ Lady Layton: why the protagonist is a woman, game structured like a TV series - Perfectly Nintendo
- ^ http://gl.vapeeducator.com/video/nfTDOF-AyGvVO4
|Professor Layton series|