<s>
was	O
a	O
2009	O
combat	O
flight	O
simulation	O
video	O
game	O
developed	O
and	O
published	O
by	O
Namco	O
Bandai	O
Games	O
for	O
iOS	B-Application
.	O
</s>
<s>
Ace	B-Operating_System
Combat	I-Operating_System
Xi	I-Operating_System
:	I-Operating_System
Skies	I-Operating_System
of	I-Operating_System
Incursion	I-Operating_System
,	O
which	O
retains	O
the	O
core	O
combat	O
mechanics	O
of	O
the	O
Ace	B-Application
Combat	I-Application
series	O
,	O
is	O
a	O
combat	O
flight	O
simulation	O
game	O
but	O
it	O
is	O
presented	O
in	O
a	O
more	O
arcade-like	O
format	O
in	O
contrast	O
to	O
other	O
flight-sim	O
games	O
.	O
</s>
<s>
Ace	B-Operating_System
Combat	I-Operating_System
Xi	I-Operating_System
does	O
not	O
have	O
multiplayer	O
capability	O
.	O
</s>
<s>
Skies	B-Operating_System
of	I-Operating_System
Incursion	I-Operating_System
takes	O
place	O
during	O
the	O
same	O
time	O
period	O
as	O
Ace	B-Application
Combat	I-Application
X	I-Application
:	I-Application
Skies	I-Application
of	I-Application
Deception	I-Application
,	O
however	O
Skies	O
of	O
Deception	O
tells	O
its	O
story	O
through	O
the	O
point	O
of	O
view	O
of	O
Gryphus	O
Squadron	O
while	O
Skies	B-Operating_System
of	I-Operating_System
Incursion	I-Operating_System
tells	O
the	O
story	O
from	O
the	O
point	O
of	O
view	O
of	O
the	O
Falco	O
Squadron	O
,	O
a	O
separate	O
unit	O
in	O
the	O
Aurelian	O
Air	O
Force	O
.	O
</s>
<s>
Aurelia	B-Application
,	O
located	O
on	O
the	O
southern	O
edge	O
of	O
the	O
Osean	O
Continent	O
,	O
has	O
lived	O
in	O
peace	O
for	O
many	O
years	O
due	O
to	O
its	O
mild	O
climate	O
and	O
vast	O
underground	O
resources	O
,	O
but	O
in	O
the	O
year	O
2020	O
,	O
the	O
country	O
was	O
invaded	O
by	O
the	O
neighboring	O
country	O
,	O
Leasath	O
,	O
under	O
the	O
command	O
of	O
Diego	O
Gaspar	O
Navarro	O
.	O
</s>
<s>
The	O
invasion	O
was	O
under	O
the	O
guise	O
of	O
Aurelia	B-Application
supposedly	O
promoting	O
civil	O
war	O
in	O
Leasath	O
.	O
</s>
<s>
Aurelia	B-Application
was	O
caught	O
vulnerable	O
and	O
was	O
quickly	O
defeated	O
within	O
a	O
matter	O
of	O
10	O
days	O
,	O
this	O
was	O
due	O
to	O
the	O
overwhelming	O
power	O
of	O
Leasath	O
's	O
advanced	O
superweapon	O
-	O
the	O
Gleipnir	B-Application
Flying	O
Fortress	O
.	O
</s>
<s>
The	O
remnants	O
of	O
Aurelia	B-Application
's	O
military	O
,	O
being	O
reduced	O
to	O
a	O
single	O
operating	O
airbase	O
,	O
quickly	O
banded	O
together	O
to	O
launch	O
a	O
last-ditch	O
counter-attack	O
against	O
the	O
invading	O
Leasath	O
forces	O
to	O
liberate	O
their	O
homeland	O
.	O
</s>
<s>
The	O
game	O
was	O
first	O
announced	O
for	O
the	O
iOS	B-Application
on	O
by	O
Japanese	O
gaming	O
magazine	O
Famitsu	O
in	O
September	O
2009	O
.	O
</s>
<s>
A	O
number	O
of	O
screenshots	O
was	O
released	O
by	O
Namco	O
Bandai	O
to	O
fans	O
through	O
their	O
Facebook	B-Application
fan	O
page	O
.	O
</s>
