<s>
Layton	B-Device
Brothers	I-Device
:	I-Device
Mystery	I-Device
Room	I-Device
is	O
a	O
puzzle	O
adventure	O
video	O
game	O
for	O
iOS	B-Application
and	O
Android	B-Application
,	O
published	O
by	O
Level-5	O
.	O
</s>
<s>
It	O
is	O
a	O
spin-off	O
of	O
the	O
Professor	B-Application
Layton	I-Application
series	I-Application
,	O
following	O
rookie	O
investigator	O
Lucy	O
Baker	O
,	O
who	O
works	O
with	O
genius	O
detective	O
Alfendi	O
Layton	O
,	O
son	O
of	O
Hershel	O
Layton	O
,	O
in	O
a	O
special	O
department	O
of	O
Scotland	O
Yard	O
's	O
crime	O
investigation	O
unit	O
known	O
as	O
the	O
"	O
Mystery	O
Room	O
"	O
.	O
</s>
<s>
An	O
Android	B-Application
version	O
was	O
released	O
on	O
September	O
5	O
,	O
2013	O
.	O
</s>
<s>
Some	O
time	O
later	O
,	O
Alfendi	O
is	O
alerted	O
by	O
Hilda	O
Pertinax	O
,	O
an	O
Interpol	B-Device
investigator	O
he	O
has	O
history	O
with	O
,	O
that	O
Mariana	O
Etista	O
's	O
whereabouts	O
have	O
been	O
traced	O
to	O
a	O
safe	O
house	O
in	O
England	O
,	O
prompting	O
the	O
duo	O
to	O
make	O
their	O
first	O
expedition	O
outside	O
of	O
their	O
offices	O
.	O
</s>
<s>
Layton	B-Device
Brothers	I-Device
:	I-Device
Mystery	I-Device
Room	I-Device
was	O
first	O
announced	O
at	O
Level-5	O
Vision	O
2009	O
as	O
Mystery	O
Room	O
,	O
the	O
first	O
entirely	O
original	O
title	O
in	O
Level-5	O
'	O
s	O
Atamania	B-Application
series	O
.	O
</s>
<s>
The	O
game	O
was	O
originally	O
designed	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
and	O
was	O
planned	O
to	O
be	O
released	O
in	O
2010	O
.	O
</s>
<s>
Finally	O
,	O
on	O
October	O
15	O
,	O
2011	O
,	O
the	O
title	O
resurfaced	O
at	O
Level-5	O
World	O
2011	O
as	O
an	O
iOS	B-Application
game	O
titled	O
Layton	B-Device
Brothers	I-Device
:	I-Device
Mystery	I-Device
Room	I-Device
.	O
</s>
<s>
The	O
iOS	B-Application
version	O
received	O
"	O
generally	O
favorable	O
reviews	O
"	O
according	O
to	O
video	O
game	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
