<s>
Sky	B-Application
Gunner	I-Application
,	O
often	O
stylized	O
as	O
SkyGunner	B-Application
,	O
is	O
a	O
3D	O
third-person	O
combat	O
flight	O
simulation	O
video	O
game	O
for	O
the	O
PlayStation	B-Device
2	I-Device
.	O
</s>
<s>
Sky	B-Application
Gunner	I-Application
follows	O
the	O
story	O
of	O
3	O
ace	O
pilots	O
,	O
Ciel	O
,	O
Copain	O
and	O
Femme	O
,	O
who	O
are	O
hired	O
to	O
protect	O
the	O
"	O
Eternal	O
Engine	O
"	O
,	O
an	O
engine	O
capable	O
of	O
perpetual	O
motion	O
.	O
</s>
<s>
The	O
game	O
received	O
"	O
generally	O
favorable	O
reviews	O
"	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
<s>
In	O
2006	O
,	O
doujin	O
software	O
house	O
EasyGameStation	O
released	O
a	O
download	O
only	O
PC	O
sequel	O
to	O
Sky	B-Application
Gunner	I-Application
entitled	O
"	O
Gunner	O
's	O
Heart	O
"	O
.	O
</s>
