<s>
Layton	B-Application
's	I-Application
Mystery	I-Application
Journey	I-Application
:	I-Application
Katrielle	I-Application
and	I-Application
the	I-Application
Millionaires	I-Application
 '	I-Application
Conspiracy	I-Application
is	O
a	O
puzzle	O
video	O
game	O
developed	O
and	O
published	O
by	O
Level-5	O
.	O
</s>
<s>
It	O
is	O
the	O
seventh	O
main	O
entry	O
in	O
the	O
Professor	B-Application
Layton	I-Application
series	I-Application
and	O
follows	O
a	O
new	O
protagonist	O
,	O
Katrielle	O
Layton	O
.	O
</s>
<s>
It	O
was	O
released	O
for	O
Android	B-Application
,	O
iOS	B-Application
,	O
and	O
the	O
Nintendo	B-Operating_System
3DS	I-Operating_System
,	O
in	O
2017	O
,	O
and	O
an	O
enhanced	O
port	O
for	O
the	O
Nintendo	B-Application
Switch	I-Application
in	O
Japan	O
in	O
2018	O
,	O
and	O
worldwide	O
in	O
2019	O
.	O
</s>
<s>
Layton	B-Application
's	I-Application
Mystery	I-Application
Journey	I-Application
follows	O
Professor	O
Hershel	O
Layton	O
's	O
daughter	O
,	O
Katrielle	O
"	O
Kat	O
"	O
Layton	O
,	O
who	O
solves	O
puzzles	O
in	O
her	O
father	O
's	O
place	O
alongside	O
her	O
talking	O
dog	O
Sherl	O
and	O
her	O
friends	O
Emiliana	O
Perfetti	O
and	O
Ernest	O
Greeves	O
.	O
</s>
<s>
Layton	B-Application
's	I-Application
Mystery	I-Application
Journey	I-Application
was	O
developed	O
by	O
Level-5	O
and	O
directed	O
by	O
Akihiro	O
Hino	O
,	O
with	O
character	O
designs	O
by	O
Takuzō	O
Nagano	O
and	O
music	O
by	O
Tomohito	O
Nishiura	O
.	O
</s>
<s>
Additionally	O
,	O
Hino	O
stated	O
that	O
because	O
half	O
of	O
all	O
the	O
Professor	B-Application
Layton	I-Application
players	O
are	O
female	O
,	O
a	O
female	O
protagonist	O
was	O
chosen	O
to	O
appeal	O
to	O
them	O
.	O
</s>
<s>
The	O
decision	O
to	O
release	O
the	O
game	O
on	O
both	O
3DS	B-Operating_System
and	O
mobile	O
devices	O
was	O
in	O
part	O
due	O
to	O
a	O
desire	O
to	O
appeal	O
to	O
a	O
wider	O
demographic	O
that	O
may	O
not	O
own	O
game	O
consoles	O
,	O
while	O
at	O
the	O
same	O
time	O
not	O
wanting	O
to	O
turn	O
their	O
backs	O
on	O
the	O
"	O
dedicated	O
3DS	B-Operating_System
fans	O
"	O
of	O
series	O
.	O
</s>
<s>
Rather	O
than	O
the	O
mobile	O
version	O
being	O
a	O
port	O
,	O
or	O
vice	O
versa	O
,	O
the	O
game	O
was	O
specifically	O
developed	O
for	O
play	O
on	O
both	O
the	O
3DS	B-Operating_System
and	O
mobile	O
.	O
</s>
<s>
The	O
game	O
was	O
announced	O
in	O
July	O
2016	O
under	O
the	O
title	O
Lady	B-Application
Layton	I-Application
:	I-Application
The	I-Application
Millionaire	I-Application
Ariadone	I-Application
's	I-Application
Conspiracy	I-Application
,	O
but	O
was	O
renamed	O
Layton	B-Application
's	I-Application
Mystery	I-Application
Journey	I-Application
in	O
April	O
2017	O
,	O
as	O
the	O
developers	O
wanted	O
to	O
give	O
the	O
game	O
a	O
grander	O
image	O
.	O
</s>
<s>
It	O
was	O
released	O
worldwide	O
for	O
iOS	B-Application
and	O
Android	B-Application
devices	O
on	O
July	O
20	O
,	O
2017	O
,	O
and	O
for	O
the	O
Nintendo	B-Operating_System
3DS	I-Operating_System
on	O
the	O
same	O
date	O
in	O
Japan	O
.	O
</s>
<s>
The	O
Nintendo	B-Operating_System
3DS	I-Operating_System
version	O
was	O
released	O
in	O
North	O
America	O
and	O
Europe	O
on	O
October	O
6	O
,	O
2017	O
.	O
</s>
<s>
A	O
Nintendo	B-Application
Switch	I-Application
version	O
was	O
released	O
in	O
Japan	O
on	O
August	O
9	O
,	O
2018	O
,	O
and	O
in	O
North	O
America	O
and	O
Europe	O
on	O
November	O
8	O
,	O
2019	O
.	O
</s>
<s>
The	O
game	O
received	O
mixed	O
reviews	O
,	O
according	O
to	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
<s>
Daan	O
Koopman	O
of	O
Nintendo	O
World	O
Report	O
gave	O
the	O
3DS	B-Operating_System
version	O
of	O
the	O
game	O
a	O
7.5	O
out	O
of	O
10	O
.	O
</s>
<s>
They	O
also	O
felt	O
as	O
though	O
,	O
"	O
despite	O
being	O
its	O
natural	O
home	O
,	O
the	O
3DS	B-Operating_System
offers	O
no	O
real	O
advantage	O
"	O
,	O
pointing	O
out	O
the	O
lack	O
of	O
3D	O
effects	O
,	O
which	O
were	O
present	O
in	O
previous	O
titles	O
.	O
</s>
<s>
They	O
also	O
noted	O
the	O
prices	O
for	O
both	O
versions	O
,	O
specifically	O
that	O
an	O
£18	O
price	O
tag	O
was	O
something	O
that	O
"	O
never	O
worked	O
"	O
for	O
mobile	O
games	O
,	O
although	O
they	O
considered	O
it	O
to	O
be	O
"	O
good	O
value	O
for	O
money	O
"	O
,	O
especially	O
given	O
that	O
free	O
daily	O
puzzles	O
are	O
being	O
promised	O
as	O
downloadable	B-Protocol
content	I-Protocol
for	O
up	O
to	O
a	O
year	O
after	O
release	O
.	O
</s>
<s>
On	O
the	O
other	O
hand	O
,	O
they	O
considered	O
the	O
3DS	B-Operating_System
version	O
being	O
more	O
than	O
twice	O
as	O
expensive	O
as	O
the	O
mobile	O
version	O
to	O
be	O
a	O
negative	O
,	O
even	O
with	O
the	O
costume	O
sets	O
,	O
which	O
were	O
paid	O
for	O
DLC	B-Protocol
in	O
the	O
mobile	O
version	O
,	O
being	O
bundled	O
into	O
the	O
retail	O
release	O
.	O
</s>
<s>
Layton	B-Application
's	I-Application
Mystery	I-Application
Journey	I-Application
was	O
the	O
29th	O
best	O
selling	O
video	O
game	O
in	O
the	O
United	O
Kingdom	O
during	O
the	O
Nintendo	B-Operating_System
3DS	I-Operating_System
version	O
's	O
European	O
debut	O
week	O
,	O
and	O
the	O
second	O
best	O
selling	O
Nintendo	B-Operating_System
3DS	I-Operating_System
game	O
in	O
the	O
region	O
after	O
Mario	O
&	O
Luigi	O
:	O
Superstar	O
Saga	O
+	O
Bowser	O
's	O
Minions	O
.	O
</s>
