<s>
Pearl	B-Application
’s	I-Application
Peril	I-Application
is	O
a	O
hidden	O
object	O
game	O
developed	O
by	O
Berlin-based	O
Wooga	O
.	O
</s>
<s>
It	O
was	O
launched	O
on	O
5	O
March	O
2013	O
on	O
the	B-Application
Facebook	I-Application
social	O
media	O
platform	O
and	O
on	O
5	O
September	O
on	O
iPad	B-Device
.	O
</s>
<s>
Pearl	B-Application
’s	I-Application
Peril	I-Application
is	O
Wooga	O
’s	O
sixth	O
game	O
,	O
and	O
was	O
the	O
company	O
’s	O
fastest	O
growing	O
game	O
at	O
the	O
time	O
.	O
</s>
<s>
Pearl	B-Application
’s	I-Application
Peril	I-Application
is	O
a	O
hidden	O
object	O
(	O
sometimes	O
known	O
as	O
hidden	O
picture	O
)	O
game	O
.	O
</s>
<s>
Pearl	B-Application
’s	I-Application
Peril	I-Application
also	O
has	O
an	O
isometric	O
building	O
metagame	O
,	O
in	O
which	O
players	O
must	O
construct	O
buildings	O
on	O
an	O
island	O
.	O
</s>
<s>
Pearl	B-Application
’s	I-Application
Peril	I-Application
is	O
set	O
in	O
the	O
1930s	O
,	O
and	O
opens	O
with	O
the	O
titular	O
adventurer	O
,	O
Pearl	O
Wallace	O
,	O
receiving	O
news	O
of	O
her	O
father	O
Samuel	O
's	O
suicide	O
.	O
</s>
<s>
Pearl	B-Application
’s	I-Application
Peril	I-Application
is	O
a	O
free-to-play	O
game	O
,	O
using	O
the	O
freemium	O
model	O
of	O
monetization	O
.	O
</s>
<s>
One	O
month	O
after	O
release	O
,	O
Pearl	B-Application
’s	I-Application
Peril	I-Application
became	O
one	O
of	O
the	O
fastest	O
growing	O
Facebook	B-Application
Games	O
,	O
as	O
measured	O
by	O
daily	O
active	O
users	O
.	O
</s>
<s>
Reviews	O
for	O
Pearl	B-Application
’s	I-Application
Peril	I-Application
are	O
generally	O
mixed	O
,	O
with	O
many	O
reviewers	O
praising	O
its	O
high	O
production	O
values	O
,	O
and	O
disapproving	O
of	O
its	O
freemium	O
monetization	O
structure	O
.	O
</s>
