<s>
is	O
a	O
vertically	O
scrolling	O
shooter	O
arcade	B-Application
video	I-Application
game	I-Application
released	O
in	O
1991	O
by	O
SNK	O
.	O
</s>
<s>
Two	O
freelance	O
ace	O
pilots	O
Tom	O
Phillips	O
and	O
Charlie	O
Stingley	O
nicknamed	O
"	O
Ghost	B-Application
Pilots	I-Application
"	O
,	O
set	O
off	O
in	O
their	O
seaplanes	O
to	O
combat	O
the	O
Axis	O
forces	O
head	O
on	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
Ghost	B-Application
Pilots	I-Application
on	O
their	O
April	O
15	O
,	O
1991	O
issue	O
as	O
being	O
the	O
seventeenth	O
most-popular	O
arcade	B-Application
game	O
at	O
the	O
time	O
.	O
</s>
<s>
Likewise	O
,	O
RePlay	O
reported	O
the	O
game	O
to	O
be	O
the	O
tenth	O
most-popular	O
arcade	B-Application
game	O
at	O
the	O
time	O
.	O
</s>
<s>
AllGames	O
Paul	O
Biondich	O
and	O
Kyle	O
Knight	O
compared	O
Ghost	B-Application
Pilots	I-Application
with	O
1942	B-Application
and	O
1941	B-Application
:	I-Application
Counter	I-Application
Attack	I-Application
,	O
regarding	O
it	O
as	O
a	O
rip-off	O
and	O
criticized	O
the	O
sluggish	O
controls	O
,	O
lack	O
of	O
enemy	O
variety	O
and	O
uninteresing	O
power-up	O
system	O
.	O
</s>
<s>
Computer	O
and	O
Video	O
Games	O
Frank	O
O'Connor	O
also	O
compared	O
the	O
game	O
with	O
Flying	B-Application
Shark	I-Application
,	O
criticizing	O
its	O
design	O
and	O
programming	O
,	O
regarding	O
it	O
to	O
be	O
an	O
average	O
but	O
mediocre	O
vertical-scrolling	O
shoot	O
'	O
em	O
up	O
.	O
</s>
<s>
Famitsus	O
four	O
reviewers	O
scored	O
the	O
Neo	B-Application
Geo	I-Application
version	O
a	O
24	O
out	O
of	O
40	O
.	O
</s>
<s>
In	O
a	O
similar	O
manner	O
as	O
Biondich	O
and	O
Knight	O
,	O
Hobby	O
Consolas	O
Manuel	O
del	O
Campo	O
also	O
compared	O
Ghost	B-Application
Pilots	I-Application
with	O
1942	B-Application
.	O
</s>
<s>
Player	O
Ones	O
Cyril	O
Drevet	O
drew	O
comparison	O
with	O
1941	B-Application
:	I-Application
Counter	I-Application
Attack	I-Application
and	O
Flying	B-Application
Shark	I-Application
as	O
well	O
but	O
gave	O
positive	O
remarks	O
to	O
the	O
visuals	O
,	O
animations	O
,	O
sound	O
and	O
longevity	O
but	O
criticized	O
its	O
low	O
difficulty	O
level	O
.	O
</s>
<s>
Última	O
Generacións	O
Javier	O
S	O
.	O
Fernández	O
reviewed	O
the	O
Neo	B-Device
Geo	I-Device
CD	I-Device
version	O
,	O
stating	O
that	O
it	O
embodied	O
the	O
spirit	O
of	O
older	O
overhead	O
shoot	O
'	O
em	O
ups	O
but	O
criticized	O
the	O
presence	O
of	O
unlimited	O
continues	O
,	O
a	O
sentiment	O
shared	O
by	O
Kun	O
and	O
Hermelin	O
.	O
</s>
<s>
Ultimate	O
Future	O
Games	O
also	O
reviewed	O
the	O
Neo	B-Device
Geo	I-Device
CD	I-Device
version	O
but	O
stated	O
it	O
was	O
not	O
as	O
fun	O
as	O
Viewpoint	B-Application
,	O
criticizing	O
its	O
slow	O
pace	O
.	O
</s>
<s>
Ghost	B-Application
Pilots	I-Application
has	O
been	O
met	O
with	O
mixed	O
reception	O
from	O
retrospective	O
reviewers	O
in	O
recent	O
years	O
.	O
</s>
