<s>
is	O
a	O
mobile	O
strategy	O
role-playing	O
video	O
game	O
developed	O
by	O
Fuji&gumi	O
Games	O
and	O
published	O
by	O
Gumi	O
for	O
iOS	B-Application
and	O
Android	B-Application
mobile	I-Application
phones	I-Application
and	O
tablets	B-Device
.	O
</s>
<s>
First	O
released	O
in	O
Japan	O
on	O
October	O
23	O
,	O
2014	O
,	O
this	O
game	O
features	O
gameplay	O
similar	O
to	O
the	O
Fire	B-Application
Emblem	I-Application
series	O
of	O
video	O
games	O
.	O
</s>
<s>
The	O
game	O
plays	O
similarly	O
to	O
the	O
core	O
gameplay	O
of	O
Nintendo	O
's	O
Fire	B-Application
Emblem	I-Application
series	O
of	O
video	O
games	O
and	O
combines	O
elements	O
of	O
social-network	O
games	O
often	O
found	O
in	O
mobile	B-Application
gaming	I-Application
.	O
</s>
<s>
The	O
game	O
involves	O
the	O
player	O
moving	O
characters	O
across	O
a	O
grid	O
with	O
chess-like	O
movement	O
requirements	O
,	O
and	O
battling	O
an	O
opposing	O
team	O
of	O
computer-controlled	O
characters	O
in	O
turn-based	O
combat	O
.	O
</s>
<s>
The	O
game	O
does	O
not	O
have	O
permadeath	B-Application
,	O
but	O
characters	O
who	O
are	O
defeated	O
do	O
lose	O
equipped	O
items	O
.	O
</s>
<s>
The	O
prequel	O
story	O
game	O
takes	O
place	O
in	O
a	O
post-apocalyptic	O
dystopic	B-Application
Tokyo	O
.	O
</s>
<s>
200	O
years	O
ago	O
,	O
strange	O
demons	O
start	O
appearing	O
in	O
the	O
human	O
world	O
where	O
humanity	O
is	O
under	O
threat	O
of	O
extinction	B-Application
.	O
</s>
<s>
The	O
game	O
had	O
a	O
cross-over	O
event	O
with	O
Brave	B-Application
Frontier	I-Application
and	O
Dempagumi.inc	O
in	O
June	O
2016	O
,	O
and	O
Puella	O
Magi	O
Madoka	O
Magica	O
in	O
November	O
2019	O
.	O
</s>
<s>
The	O
game	O
received	O
mixed	O
reviews	O
from	O
critics	O
,	O
who	O
generally	O
praised	O
the	O
core	O
Fire	O
Emblem-based	O
game	O
play	O
,	O
but	O
criticized	O
the	O
social	O
gaming	O
aspects	O
and	O
extensive	O
load	B-Operating_System
times	I-Operating_System
.	O
</s>
<s>
TouchArcade	O
praised	O
the	O
game	O
's	O
production	O
values	O
and	O
core	O
gameplay	O
,	O
but	O
criticized	O
the	O
need	O
for	O
excessive	O
grinding	B-Application
or	O
blind	O
luck	O
needed	O
to	O
advance	O
through	O
the	O
game	O
,	O
ultimately	O
concluding	O
that	O
"	O
neither	O
...	O
the	O
story	O
nor	O
the	O
gameplay	O
are	O
strong	O
enough	O
to	O
elevate	O
the	O
game	O
beyond	O
the	O
status	O
of	O
an	O
average	O
social	O
RPG	O
with	O
excellent	O
production	O
values	O
.	O
</s>
<s>
Genre	O
fans	O
will	O
likely	O
get	O
a	O
kick	O
out	O
of	O
it	O
initially	O
,	O
but	O
I	O
have	O
to	O
believe	O
that	O
only	O
the	O
hardest	O
of	O
the	O
hardcore	O
will	O
stick	O
around	O
once	O
the	O
grind	B-Application
sets	O
in	O
.	O
</s>
<s>
Siliconera	O
described	O
the	O
game	O
as	O
a	O
"	O
well-executed	O
copycat	O
"	O
of	O
Fire	B-Application
Emblem	I-Application
,	O
that	O
made	O
up	O
for	O
the	O
lack	O
of	O
character	O
development	O
with	O
making	O
it	O
enjoyable	O
to	O
build	O
fighting	O
teams	O
based	O
more	O
on	O
skill	O
and	O
appearance	O
than	O
relevance	O
to	O
the	O
story	O
.	O
</s>
<s>
As	O
of	O
May	O
2016	O
,	O
the	O
game	O
had	O
been	O
downloaded	O
3.5	O
million	O
times	O
in	O
Japan	O
alone	O
,	O
and	O
was	O
one	O
of	O
the	O
top-grossing	O
Android	B-Application
releases	O
in	O
Japan	O
.	O
</s>
