<s>
is	O
a	O
2006	O
combat	O
flight	O
simulation	O
video	O
game	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
.	O
</s>
<s>
It	O
is	O
the	O
first	O
installment	O
of	O
the	O
Ace	B-Application
Combat	I-Application
franchise	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
,	O
and	O
the	O
second	O
for	O
a	O
handheld	B-Application
game	I-Application
system	I-Application
.	O
</s>
<s>
Ace	B-Application
Combat	I-Application
X	I-Application
also	O
includes	O
a	O
multiplayer	O
mode	O
,	O
using	O
ad-hocwireless	O
to	O
connect	O
up	O
to	O
four	O
players	O
.	O
</s>
<s>
This	O
is	O
the	O
same	O
reporter	O
who	O
covers	O
the	O
Osea-Yuktobania	O
conflict	O
of	O
Ace	B-Application
Combat	I-Application
5	I-Application
:	I-Application
The	I-Application
Unsung	I-Application
War	I-Application
.	O
</s>
<s>
In	O
the	O
year	O
2020	O
,	O
after	O
years	O
of	O
civil	O
war	O
and	O
internal	O
struggle	O
,	O
the	O
Democratic	O
Republic	O
of	O
Leasath	O
(	O
)	O
,	O
under	O
the	O
command	O
of	O
Diego	O
Gaspar	O
Navarro	O
invades	O
its	O
peaceful	O
neighboring	O
country	O
,	O
the	O
Federal	B-Application
Republic	I-Application
of	I-Application
Aurelia	I-Application
.	O
</s>
<s>
Owing	O
to	O
their	O
Gleipnir	B-Application
Flying	O
Fortress	O
,	O
Leasath	O
overwhelms	O
most	O
of	O
Aurelia	O
within	O
ten	O
days	O
.	O
</s>
<s>
The	O
remainder	O
of	O
the	O
Aurelian	O
military	O
bands	O
together	O
at	O
Cape	O
Aubrey	O
Airbase	O
and	O
manages	O
to	O
achieve	O
a	O
Pyrrhic	O
victory	O
:	O
they	O
destroy	O
a	O
flight	O
of	O
Leasath	O
bombers	O
,	O
but	O
Gleipnir	B-Application
in	O
turn	O
wipes	O
out	O
most	O
of	O
the	O
deployed	O
Aurelian	O
aircraft	O
.	O
</s>
<s>
Among	O
the	O
survivors	O
of	O
Gleipnir	B-Application
's	O
attack	O
is	O
the	O
ace	O
pilot	O
Gryphus	O
One	O
,	O
who	O
bears	O
the	O
symbol	O
of	O
"	O
Southern	O
Cross	O
"	O
.	O
</s>
<s>
After	O
the	O
liberation	O
of	O
Port	O
Patterson	O
,	O
the	O
Aurelians	O
set	O
out	O
to	O
liberate	O
the	O
city	O
of	O
Santa	O
Elva	O
and	O
destroy	O
Gleipnir	B-Application
.	O
</s>
<s>
Depending	O
on	O
the	O
players	O
choice	O
,	O
either	O
the	O
Aurelian	O
navy	O
or	O
ground	O
forces	O
engage	O
Gleipnir	B-Application
.	O
</s>
<s>
Gryphus	O
One	O
downs	O
Gleipnir	B-Application
over	O
Santa	O
Elva	O
,	O
earning	O
the	O
nickname	O
of	O
"	O
Nemesis	O
"	O
among	O
Leasathians	O
.	O
</s>
<s>
Ace	B-Application
Combat	I-Application
X	I-Application
:	I-Application
Skies	I-Application
of	I-Application
Deception	I-Application
received	O
generally	O
favorable	O
reviews	O
according	O
to	O
review	O
aggregator	O
Metacritic	O
.	O
</s>
