<s>
is	O
a	O
free-to-play	O
tactical	O
role-playing	O
game	O
developed	O
by	O
Intelligent	O
Systems	O
and	O
published	O
by	O
Nintendo	O
for	O
Android	B-Application
and	O
iOS	B-Application
.	O
</s>
<s>
The	O
game	O
is	O
a	O
mobile	O
spin-off	O
of	O
the	O
Fire	B-Application
Emblem	I-Application
series	O
featuring	O
its	O
characters	O
,	O
and	O
was	O
released	O
on	O
February	O
2	O
,	O
2017	O
.	O
</s>
<s>
Fire	B-Application
Emblem	I-Application
Heroes	I-Application
received	O
a	O
number	O
of	O
awards	O
and	O
nominations	O
in	O
"	O
Best	O
Mobile	O
Game	O
"	O
categories	O
.	O
</s>
<s>
the	O
game	O
had	O
grossed	O
over	O
worldwide	O
,	O
making	O
it	O
Nintendo	O
's	O
highest-grossing	B-Application
mobile	I-Application
game	I-Application
.	O
</s>
<s>
Fire	B-Application
Emblem	I-Application
Heroes	I-Application
is	O
a	O
tactical	O
role-playing	O
game	O
.	O
</s>
<s>
Unlike	O
other	O
Fire	B-Application
Emblem	I-Application
titles	O
,	O
there	O
is	O
no	O
element	O
of	O
randomness	O
or	O
chance	O
in	O
battles	O
;	O
an	O
engagement	O
between	O
two	O
characters	O
is	O
perfectly	O
deterministic	O
,	O
as	O
is	O
the	O
enemy	O
AI	O
,	O
so	O
a	O
given	O
strategy	O
will	O
either	O
win	O
or	O
lose	O
consistently	O
.	O
</s>
<s>
Fire	B-Application
Emblem	I-Application
Heroes	I-Application
has	O
a	O
set	O
of	O
"	O
story	O
"	O
missions	O
divided	O
by	O
chapters	O
for	O
the	O
player	O
to	O
complete	O
,	O
rotating	O
challenge	O
missions	O
,	O
a	O
training	O
tower	O
for	O
increasing	O
character	O
's	O
strength	O
in	O
random	O
battles	O
,	O
fights	O
against	O
other	O
players	O
 '	O
teams	O
(	O
albeit	O
controlled	O
by	O
the	O
game	O
's	O
AI	O
)	O
in	O
the	O
"	O
Arena	O
"	O
and	O
in	O
"	O
Aether	O
Raids	O
"	O
,	O
special	O
challenges	O
involving	O
"	O
Brigades	O
"	O
where	O
teams	O
with	O
eight	O
or	O
more	O
characters	O
are	O
controlled	O
on	O
a	O
larger	O
map	O
than	O
usual	O
,	O
and	O
a	O
variety	O
of	O
other	O
content	O
to	O
complete	O
.	O
</s>
<s>
Upon	O
its	O
initial	O
release	O
date	O
,	O
Fire	B-Application
Emblem	I-Application
Heroes	I-Application
players	O
could	O
potentially	O
access	O
up	O
to	O
100	O
distinct	O
controllable	O
units	O
in	O
the	O
game	O
,	O
with	O
players	O
beginning	O
with	O
access	O
to	O
Alfonse	O
,	O
Sharena	O
,	O
and	O
Anna	O
.	O
</s>
<s>
The	O
main	O
conflict	O
in	O
Fire	B-Application
Emblem	I-Application
Heroes	I-Application
is	O
a	O
war	O
between	O
the	O
nations	O
of	O
Askr	O
and	O
Embla	O
.	O
</s>
<s>
Both	O
sides	O
use	O
summoned	O
heroes	O
from	O
other	O
worlds	O
,	O
with	O
the	O
other	O
worlds	O
being	O
the	O
settings	O
of	O
other	O
Fire	B-Application
Emblem	I-Application
games	O
.	O
</s>
<s>
In	O
the	O
Book	O
II	O
expansion	O
,	O
released	O
from	O
November	O
2017September	O
2018	O
,	O
two	O
new	O
nations	O
are	O
introduced	O
:	O
the	O
Kingdom	O
of	O
Nifl	O
and	O
its	O
Princess	O
Fjorm	O
,	O
who	O
ally	O
with	O
Askr	O
,	O
and	O
the	O
Kingdom	O
of	O
Múspell	O
and	O
its	O
King	O
Surtr	O
,	O
Princess	O
Laevatein	O
,	O
and	O
strategist	O
Loki	B-Device
,	O
who	O
ally	O
with	O
Embla	O
.	O
</s>
<s>
The	O
members	O
of	O
Múspell	O
have	O
the	O
names	O
of	O
Surtr	O
,	O
the	O
fire	O
giant	O
;	O
Loki	B-Device
the	O
trickster	O
half-giant	O
/	O
half-god	O
;	O
and	O
Laevatein	O
the	O
weapon	O
;	O
the	O
members	O
of	O
Hel	O
include	O
references	O
to	O
Hel	O
(	O
the	O
deity	O
)	O
,	O
Líf	O
,	O
and	O
Eir	O
.	O
</s>
<s>
The	O
game	O
was	O
announced	O
by	O
Nintendo	O
as	O
the	O
third	O
mobile	O
game	O
made	O
under	O
the	O
DeNA	O
partnership	O
in	O
April	O
2016	O
,	O
alongside	O
an	O
Animal	B-Application
Crossing	I-Application
mobile	O
game	O
,	O
and	O
was	O
originally	O
set	O
for	O
release	O
that	O
year	O
.	O
</s>
<s>
Intelligent	O
Systems	O
,	O
the	O
studio	O
within	O
Nintendo	O
that	O
has	O
produced	O
the	O
other	O
games	O
of	O
the	O
Fire	B-Application
Emblem	I-Application
series	O
,	O
headed	O
up	O
development	O
of	O
Heroes	O
to	O
ensure	O
it	O
would	O
be	O
a	O
proper	O
Fire	B-Application
Emblem	I-Application
game	O
optimized	O
for	O
mobile	O
devices	O
.	O
</s>
<s>
The	O
game	O
's	O
title	O
and	O
gameplay	O
details	O
were	O
later	O
revealed	O
during	O
a	O
Fire	B-Application
Emblem	I-Application
Direct	O
presentation	O
in	O
January	O
2017	O
.	O
</s>
<s>
The	O
game	O
was	O
initially	O
released	O
in	O
39	O
countries	O
for	O
Android	B-Application
and	O
iOS	B-Application
devices	O
on	O
February	O
2	O
,	O
2017	O
.	O
</s>
<s>
As	O
was	O
the	O
case	O
with	O
Nintendo	O
's	O
previously	O
released	O
mobile	O
game	O
Super	B-Application
Mario	I-Application
Run	I-Application
,	O
Fire	B-Application
Emblem	I-Application
Heroes	I-Application
requires	O
players	O
to	O
have	O
an	O
internet	O
connection	O
to	O
play	O
.	O
</s>
<s>
Shingo	O
Matsushita	O
,	O
the	O
director	O
of	O
Heroes	O
,	O
compared	O
a	O
normal	O
Fire	B-Application
Emblem	I-Application
game	O
to	O
a	O
movie	O
,	O
and	O
Heroes	O
to	O
a	O
television	O
series	O
;	O
there	O
would	O
be	O
a	O
constant	O
demand	O
for	O
new	O
"	O
episodes	O
"	O
,	O
but	O
there	O
would	O
also	O
be	O
a	O
feedback	O
loop	O
between	O
the	O
producers	O
and	O
the	O
players	O
that	O
could	O
affect	O
the	O
initial	O
vision	O
of	O
the	O
product	O
.	O
</s>
<s>
At	O
time	O
of	O
release	O
,	O
Fire	B-Application
Emblem	I-Application
Heroes	I-Application
received	O
mixed	O
reception	O
,	O
according	O
to	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
<s>
,	O
the	O
game	O
has	O
grossed	O
worldwide	O
,	O
making	O
it	O
Nintendo	O
's	O
highest-grossing	B-Application
mobile	I-Application
game	I-Application
.	O
</s>
<s>
Commentators	O
have	O
noted	O
that	O
despite	O
having	O
an	O
install	O
base	O
smaller	O
than	O
Super	B-Application
Mario	I-Application
Run	I-Application
,	O
Fire	B-Application
Emblem	I-Application
Heroes	I-Application
is	O
more	O
financially	O
lucrative	O
for	O
Nintendo	O
.	O
</s>
<s>
The	O
Verge	O
noted	O
this	O
was	O
due	O
both	O
to	O
being	O
a	O
"	O
superior	O
game	O
"	O
to	O
Super	B-Application
Mario	I-Application
Run	I-Application
as	O
well	O
as	O
Heroes	O
targeting	O
a	O
somewhat	O
older	O
audience	O
willing	O
and	O
capable	O
of	O
paying	O
microtransactions	O
for	O
more	O
content	O
.	O
</s>
<s>
The	O
game	O
won	O
the	O
award	O
for	O
"	O
Best	O
Game	O
of	O
2017	O
"	O
in	O
Google	B-Application
Play	I-Application
Japan	I-Application
,	O
and	O
for	O
"	O
Best	O
Mobile	O
Game	O
"	O
in	O
Destructoids	O
Game	O
of	O
the	O
Year	O
Awards	O
2017	O
,	O
and	O
it	O
also	O
won	O
the	O
People	O
's	O
Choice	O
Award	O
for	O
the	O
same	O
category	O
in	O
IGNs	O
Best	O
of	O
2017	O
Awards	O
.	O
</s>
