Mobile game · 2017

Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy

Join Katrielle Layton, our new hero, as she becomes embroiled in a casual, quizzical quest, which has its roots in our hero’s search for her missing father, Professor Hershel Layton. You'll be whisked around London's famous landmarks, from the Houses of Parliament to Tower Bridge, following Kat, solving case after unlikely case, until she unwittingly uncovers the Millionaires' Conspiracy. The story begins with Katrielle setting up the Layton Detective Agency, determined to prove her worth and hoping the exposure will uncover clues about the missing professor's whereabouts. Help Kat discover clues, solve mysteries and original puzzles! Fashion-conscious players can also redecorate the agency and dress Katrielle in various outfits to suit the case at hand. With the most puzzles ever included in a Layton game, a colorful new cast, and an intriguing storyline that includes seven millionaires and one whopper of a conspiracy, will she ever be able to find her missing father?

Estimated daily players

~3300.0%

Range 33–2K

Estimated total players

~6,5000.0%

Range 3.3K–13K

See what's trending

Estimates, not counts — nobody publishes real player numbers for mobile games, so these are modelled from public signals. How we work them out

Jul 20, 2017Android iOSPEGI E10+ESRB 16CERO A

Adventure Puzzle Role-playing (RPG)Strategy Fantasy Mystery

Get the game

Google Play App Store (iPhone)

What the estimate rests on

Google Play 66%
App Store 34%

Player estimates

Nobody publishes how many people play Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy, so these figures are modelled from the public counts on Google Play, App Store, Twitch. Each count stands in a roughly known ratio to a population — one Play rating per ~45 players, one Steam review per ~35 owners — and the estimates below combine those readings, weighted by how much each source can be trusted to speak for the whole game. Read the range as the answer and the headline as its middle.

Estimated daily players

~330

0.0%

Range 33 – 2K

No source reports a live count for this game, so this is a share of the total player base — a genre assumption rather than an observation, which is why the range is wide.

Estimated total players

~6,500

0.0%

Range 3.3K – 13K

Everyone who has ever played, from the cumulative counts: store ratings and installs, Steam reviews, members and subscribers.

Estimated total players over time

2 readings · last 2 days

Average estimated players per month

Mean estimated total players for Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy per calendar month, newest first
Month	Estimated total players	Change
August 2026	~13,000	—

Community activity

Last checked Aug 9, 2026

Store signals

How many people have rated, reviewed or installed Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy where it is sold.

Google Play ratings

472

Average rating: 3.7
Installs: 50K+

First reading taken Aug 9, 2026 — the chart appears once there are two.

App Store ratings

109

0.0%

Average rating: 4.2

Community signals

How many people gather around Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy outside the stores — members, subscribers and live viewers.

Twitch viewers

Live channels: 0

First reading taken Aug 8, 2026 — the chart appears once there are two.

Not tracked for Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy: Steam, Discord, Reddit, YouTube. A platform appears here once the game has a link to it — most mobile games have no Steam port or subreddit, so a gap is normal rather than a sign the game is small.

Screenshots

Frequently asked questions

How many people play Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy?

We estimate that about 6,500 people have played Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy — plausibly between 3.3K and 13K. Around 330 of them play on a given day, in a range of 33 and 2K. Both figures are modelled from public counts on Google Play, App Store and Twitch rather than published by the developer, so read them as a scale rather than as a headcount.

Is Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy still active?

Yes. Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy is holding steady — it measured within a percent of where it was a week ago. We recheck every source daily, and the charts on this page show each platform's readings over time.

How are the Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy player estimates worked out?

Nobody publishes player counts for mobile games, so we infer them. Each public count we can read is converted into a population using a documented ratio — roughly one Google Play rating per 45 people who played, one Steam review per 35 owners, one Discord member per 40 players — and the live counts (Steam concurrents, members online, Twitch viewers) are converted the same way into a daily figure. Those separate estimates are then averaged in proportion to how much each source can be trusted, which is why sources that disagree widen the published range instead of cancelling out. This page is built on 2 readings taken since August 8, 2026.

When was Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy released?

Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy was released on July 20, 2017 for Android and iOS.

What platforms is Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy available on?

Layton's Mystery Journey: Katrielle and the Millionaire's Conspiracy is available on Android and iOS. You can get it from Google Play and App Store (iPhone).