<s>
is	O
a	O
spin-off	O
installment	O
of	O
the	O
Ace	B-Application
Combat	I-Application
flight	O
simulation	O
video	O
game	O
series	O
.	O
</s>
<s>
It	O
was	O
developed	O
by	O
Project	O
Aces	O
and	O
published	O
by	O
Bandai	O
Namco	O
Games	O
for	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
and	O
Xbox	B-Operating_System
360	I-Operating_System
platforms	O
in	O
October	O
2011	O
.	O
</s>
<s>
The	O
game	O
was	O
later	O
released	O
on	O
Microsoft	B-Application
Windows	I-Application
in	O
January	O
2013	O
through	O
Steam	B-Application
and	O
Games	B-Application
for	I-Application
Windows	I-Application
–	I-Application
Live	I-Application
,	O
with	O
the	O
latter	O
notably	O
being	O
the	O
final	O
retail	O
release	O
for	O
the	O
platform	O
shortly	O
before	O
its	O
discontinuation	O
.	O
</s>
<s>
This	O
is	O
also	O
the	O
first	O
Ace	B-Application
Combat	I-Application
title	O
with	O
a	O
plot	O
mostly	O
written	O
by	O
non-Japanese	O
writers	O
,	O
with	O
noted	O
author	O
Jim	O
DeFelice	O
at	O
the	O
helm	O
.	O
</s>
<s>
Assault	B-Application
Horizon	I-Application
continued	O
the	O
trend	O
of	O
Ace	B-Application
Combat	I-Application
games	O
set	O
in	O
the	O
real	O
Earth	O
rather	O
than	O
on	O
"	O
Strangereal	O
"	O
,	O
the	O
setting	O
for	O
most	O
Ace	B-Application
Combat	I-Application
games	O
.	O
</s>
<s>
To	O
initiate	O
DFM	O
,	O
the	O
player	O
taps	O
LB+RB	O
on	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
or	O
L2+R2	O
on	O
the	B-Operating_System
PS3	I-Operating_System
when	O
they	O
have	O
gotten	O
close	O
enough	O
to	O
the	O
plane	O
they	O
are	O
targeting	O
.	O
</s>
<s>
Assault	B-Application
Horizon	I-Application
's	O
multiplayer	O
has	O
been	O
improved	O
since	O
Ace	B-Application
Combat	I-Application
6	I-Application
:	I-Application
Fires	I-Application
of	I-Application
Liberation	I-Application
.	O
</s>
<s>
On	O
the	O
Ace	B-Application
Combat	I-Application
website	O
,	O
players	O
can	O
join	O
an	O
online	O
faction	O
(	O
one	O
for	O
each	O
capital	O
city	O
featured	O
in	O
Capital	O
Conquest	O
)	O
,	O
and	O
any	O
points	O
they	O
receive	O
individually	O
while	O
playing	O
in	O
a	O
certain	O
city	O
will	O
go	O
towards	O
that	O
player	O
's	O
faction	O
's	O
control	O
of	O
that	O
city	O
.	O
</s>
<s>
High-G	O
turns	O
return	O
from	O
Ace	B-Application
Combat	I-Application
6	I-Application
:	I-Application
Fires	I-Application
of	I-Application
Liberation	I-Application
,	O
as	O
well	O
as	O
Auto	O
Pilot	O
if	O
both	O
shoulder	O
buttons	O
are	O
held	O
down	O
.	O
</s>
<s>
On	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
,	O
the	O
game	O
supports	O
the	O
Ace	O
Edge	O
Joysticks	O
released	O
with	O
Ace	B-Application
Combat	I-Application
6	I-Application
:	I-Application
Fires	I-Application
of	I-Application
Liberation	I-Application
.	O
</s>
<s>
Unlike	O
other	O
games	O
in	O
the	O
Ace	B-Application
Combat	I-Application
series	O
(	O
but	O
in	O
the	O
same	O
vein	O
as	O
Ace	B-Application
Combat	I-Application
:	I-Application
Joint	I-Application
Assault	I-Application
)	O
,	O
Assault	B-Application
Horizon	I-Application
takes	O
place	O
in	O
real-world	O
locations	O
.	O
</s>
<s>
The	O
player	O
is	O
in	O
an	O
F-22	B-Application
engaging	O
and	O
destroying	O
several	O
enemies	O
before	O
being	O
shot	O
down	O
himself	O
.	O
</s>
<s>
Ace	B-Application
Combat	I-Application
:	I-Application
Assault	I-Application
Horizon	I-Application
continues	O
the	O
trend	O
of	O
Ace	B-Application
Combat	I-Application
games	O
set	O
in	O
the	O
real	O
Earth	O
rather	O
than	O
on	O
"	O
Strangereal	O
"	O
,	O
the	O
setting	O
for	O
most	O
Ace	B-Application
Combat	I-Application
games	O
.	O
</s>
<s>
All	O
PlayStation	B-Operating_System
3	I-Operating_System
players	O
could	O
download	O
it	O
for	O
free	O
,	O
but	O
Xbox	B-Operating_System
360	I-Operating_System
players	O
needed	O
to	O
have	O
Xbox	B-Operating_System
LIVE	O
Gold	O
for	O
the	O
first	O
week	O
in	O
order	O
to	O
download	O
it	O
;	O
it	O
then	O
migrated	O
to	O
Xbox	B-Operating_System
LIVE	O
Silver	O
as	O
well	O
.	O
</s>
<s>
It	O
could	O
be	O
purchased	O
in	O
the	O
PlayStation	O
Store	O
for	O
US	O
$7.99	O
or	O
in	O
the	O
Xbox	B-Operating_System
Marketplace	O
for	O
640	O
MS	O
Points	O
.	O
</s>
<s>
A	O
special	O
edition	O
released	O
in	O
Japan	O
included	O
Aces	O
at	O
War	O
:	O
A	O
History	O
,	O
a	O
special	O
artbook	O
detailing	O
the	O
content	O
from	O
Ace	B-Application
Combat	I-Application
Zero	O
,	O
4	O
,	O
and	O
5	O
from	O
an	O
in-universe	O
perspective	O
,	O
as	O
well	O
as	O
production	O
notes	O
from	O
the	O
Project	O
Aces	O
team	O
.	O
</s>
<s>
A	O
day	O
later	O
,	O
the	O
PC	O
version	O
of	O
the	O
game	O
was	O
officially	O
announced	O
,	O
as	O
well	O
as	O
the	O
availability	O
of	O
the	O
game	O
on	O
the	O
PlayStation	O
Store	O
and	O
Xbox	B-Operating_System
360	I-Operating_System
Games	O
on	O
Demand	O
.	O
</s>
<s>
The	O
PC	O
version	O
was	O
available	O
through	O
retailers	O
as	O
well	O
as	O
Steam	B-Application
and	O
Games	B-Application
for	I-Application
Windows	I-Application
Marketplace	O
.	O
</s>
<s>
It	O
came	O
with	O
the	O
Tokyo	O
and	O
Honolulu	O
maps	O
,	O
as	O
well	O
as	O
the	O
ASF-X	O
Shinden	O
II	O
,	O
F-15S/MTD	O
,	O
Su-37	O
Terminator	O
,	O
AV-8B	O
Harrier	O
II	O
,	O
CFA-44	B-Application
Nosferatu	O
,	O
and	O
Ka-50	O
Hokum	O
.	O
</s>
<s>
In	O
March	O
2012	O
,	O
ASCII	O
Media	O
Works	O
released	O
Ace	B-Application
Combat	I-Application
:	O
Ikaros	O
in	O
the	O
Sky	O
.	O
</s>
<s>
A	O
tie-in	O
novel	O
for	O
Assault	B-Application
Horizon	I-Application
,	O
Ikaros	O
in	O
the	O
Sky	O
is	O
the	O
story	O
of	O
series	O
character	O
Kei	O
Nagase	O
as	O
she	O
participates	O
in	O
the	O
JASDF	O
's	O
ASF-X	O
Shinden	O
II	O
fighter	O
program	O
.	O
</s>
<s>
Metacritic	O
gives	O
the	O
game	O
a	O
78	O
out	O
of	O
100	O
(	O
based	O
on	O
71	O
reviews	O
)	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
release	O
,	O
a	O
77	O
out	O
of	O
100	O
(	O
based	O
on	O
28	O
reviews	O
)	O
for	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
release	O
,	O
and	O
a	O
77/100	O
for	O
the	O
Enhanced	O
Edition	O
on	O
PC	O
.	O
</s>
<s>
Reception	O
from	O
the	O
audience	O
has	O
also	O
been	O
positive	O
;	O
users	O
on	O
Metacritic	O
give	O
a	O
6.8/10	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
and	O
a	O
7.2/10	O
for	O
the	B-Operating_System
PS3	I-Operating_System
,	O
with	O
some	O
gamers	O
feeling	O
that	O
the	O
new	O
gameplay	O
elements	O
kept	O
the	O
series	O
"	O
fresh	O
and	O
exciting	O
"	O
.	O
</s>
<s>
IGN	O
gave	O
Assault	B-Application
Horizon	I-Application
a	O
7.5/10	O
,	O
praising	O
the	O
game	O
for	O
keeping	O
the	O
arcade-like	O
controls	O
to	O
make	O
it	O
easy	O
to	O
jump	O
into	O
.	O
</s>
<s>
GameSpot	O
gave	O
the	O
game	O
a	O
5.5/10	O
and	O
1UP	O
gave	O
it	O
a	O
D+	O
,	O
finding	O
some	O
of	O
these	O
criticized	O
features	O
to	O
be	O
what	O
ruined	O
the	O
game	O
's	O
potential	O
,	O
and	O
comparing	O
the	O
game	O
to	O
the	O
Call	B-Application
of	I-Application
Duty	I-Application
series	O
.	O
</s>
