<s>
Mystery	B-Application
Trackers	I-Application
is	O
a	O
casual	O
game	O
series	O
developed	O
by	O
Elephant	O
Games	O
and	O
distributed	O
by	O
Big	O
Fish	O
Games	O
.	O
</s>
<s>
The	O
Mystery	B-Application
Trackers	I-Application
series	O
are	O
‘	O
Hidden	O
Object	O
Puzzle	O
Adventure’	O
puzzles	O
(	O
HOPA	O
)	O
were	O
to	O
progress	O
through	O
a	O
game	O
,	O
the	O
player	O
must	O
find	O
a	O
certain	O
number	O
of	O
items	O
hidden	O
somewhere	O
on	O
a	O
painted	O
scene	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
The	O
Void	O
is	O
the	O
first	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
The	O
player	O
is	O
in	O
the	O
role	O
of	O
a	O
detective	O
working	O
for	O
the	O
Mystery	B-Application
Trackers	I-Application
Organization	O
,	O
which	O
is	O
a	O
common	O
thread	O
among	O
all	O
games	O
in	O
the	O
series	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
Raincliff	O
is	O
the	O
second	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
Black	O
Isle	O
is	O
the	O
third	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
A	O
television	O
news	O
reporter	O
and	O
camera	O
operator	O
were	O
trying	O
to	O
investigate	O
the	O
strange	O
rumors	O
which	O
have	O
circulated	O
about	O
the	O
isle	O
,	O
and	O
the	O
Mystery	B-Application
Trackers	I-Application
have	O
to	O
save	O
them	O
from	O
the	O
mysterious	O
masked	O
man	O
who	O
seems	O
to	O
have	O
kidnapped	O
them	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
The	O
Four	O
Aces	O
is	O
the	O
fourth	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
Silent	O
Hollow	O
is	O
the	O
fifth	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
Raincliff	O
's	O
Phantoms	O
is	O
the	O
sixth	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
Blackrow	O
's	O
Secret	O
is	O
the	O
seventh	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
Nightsville	O
Horror	O
is	O
the	O
eighth	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
Winterpoint	O
Tragedy	O
is	O
the	O
ninth	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
Paxton	O
Creek	O
Avenger	O
is	O
the	O
tenth	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
Train	O
to	O
Hellswich	O
is	O
the	O
eleventh	O
installment	O
in	O
the	O
series	O
.	O
</s>
<s>
Mystery	B-Application
Trackers	I-Application
:	O
Queen	O
of	O
Hearts	O
is	O
the	O
twelfth	O
installment	O
in	O
the	O
series	O
,	O
and	O
was	O
released	O
in	O
January	O
2017	O
.	O
</s>
<s>
First	O
named	O
Mystery	B-Application
Trackers	I-Application
:	O
Tragedy	O
in	O
the	O
Training	O
Camp	O
,	O
the	O
new	O
title	O
of	O
the	O
game	O
is	O
Fatal	O
Lesson	O
.	O
</s>
<s>
It	O
is	O
a	O
crossover	O
that	O
combines	O
Mystery	B-Application
Trackers	I-Application
with	O
two	O
of	O
Elephant	O
Games	O
 '	O
other	O
popular	O
mystery	O
series	O
,	O
Haunted	O
Hotel	O
and	O
Grim	O
Tales	O
.	O
</s>
