<s>
It	O
made	O
its	O
debut	O
on	O
the	O
Japanese	O
PC-8801	B-Device
in	O
1986	O
,	O
and	O
was	O
ported	O
to	O
the	O
Fujitsu	B-Device
FM-7	I-Device
and	O
DOS	B-Device
formats	O
soon	O
after	O
.	O
</s>
<s>
It	O
was	O
later	O
remade	O
for	O
the	O
Sega	B-Device
CD	I-Device
and	O
has	O
a	O
sequel	O
called	O
Silpheed	B-Device
:	I-Device
The	I-Device
Lost	I-Device
Planet	I-Device
for	O
the	O
PlayStation	B-Device
2	I-Device
.	O
</s>
<s>
Silpheed	B-Device
is	O
the	O
name	O
of	O
the	O
spacecraft	O
that	O
the	O
player	O
controls	O
,	O
and	O
is	O
most	O
likely	O
derived	O
from	O
the	O
famous	O
ballet	O
,	O
La	O
Sylphide	O
.	O
</s>
<s>
Like	O
many	O
shooter	O
games	O
,	O
the	O
story	O
involves	O
using	O
the	O
Silpheed	B-Device
as	O
Earth	O
's	O
last	O
effort	O
to	O
save	O
itself	O
from	O
destruction	O
by	O
a	O
powerful	O
enemy	O
invasion	O
.	O
</s>
<s>
The	O
original	O
1986	O
PC-88	B-Device
version	O
used	O
3D	O
polygonal	O
graphics	O
on	O
top	O
of	O
a	O
tilted	O
third-person	O
backdrop	O
.	O
</s>
<s>
The	O
1993	O
Sega	B-Device
CD	I-Device
version	O
later	O
used	O
pre-rendered	O
computer	O
animation	O
as	O
a	O
full	O
motion	O
video	O
background	O
,	O
a	O
technique	O
previously	O
used	O
by	O
the	O
Namco	B-Application
System	I-Application
21	I-Application
arcade	O
game	O
Galaxian	B-Application
3	I-Application
.	O
</s>
<s>
Silpheed	B-Device
is	O
a	O
vertical-scrolling	O
shooter	O
video	O
game	O
.	O
</s>
<s>
The	O
player	O
assumes	O
the	O
role	O
of	O
a	O
starship	O
named	O
the	O
SA-08	O
Silpheed	B-Device
,	O
deployed	O
by	O
the	O
Yggdrassil	O
supercomputer	O
to	O
destroy	O
the	O
Xacalite	O
terrorist	O
organization	O
.	O
</s>
<s>
The	O
Silpheed	B-Device
can	O
freely	O
move	O
about	O
the	O
screen	O
.	O
</s>
<s>
Weapons	O
can	O
be	O
attached	O
to	O
either	O
side	O
of	O
the	O
Silpheed	B-Device
.	O
</s>
<s>
The	O
original	O
Silpheed	B-Device
game	O
was	O
created	O
for	O
the	O
PC-8801	B-Device
,	O
and	O
released	O
on	O
December	O
5	O
,	O
1986	O
.	O
</s>
<s>
Another	O
version	O
for	O
the	O
FM-7	B-Device
was	O
released	O
on	O
March	O
3	O
,	O
1988	O
.	O
</s>
<s>
In	O
the	O
same	O
year	O
,	O
the	O
game	O
was	O
brought	O
to	O
the	O
United	O
States	O
for	O
the	O
first	O
time	O
by	O
Sierra	O
On-Line	O
who	O
ported	O
the	O
game	O
to	O
DOS	B-Device
and	O
other	O
platforms	O
.	O
</s>
<s>
The	O
DOS	B-Device
version	O
(	O
1.0	O
)	O
released	O
on	O
April	O
of	O
1989	O
.	O
</s>
<s>
In	O
1989	O
Sierra	O
On-Line	O
also	O
ported	O
Silpheeed	O
to	O
the	O
Apple	B-Device
IIGS	I-Device
,	O
which	O
supported	O
the	O
same	O
640x200	O
graphics	O
modes	O
of	O
the	O
original	O
NEC	B-Device
PC-8801	I-Device
version	O
,	O
and	O
its	O
full	O
musical	O
score	O
(	O
based	O
on	O
the	O
Roland	O
MT-32	O
soundtrack	O
from	O
the	O
DOS	B-Device
version	O
)	O
using	O
its	O
15-voice	O
Ensoniq	O
sound	O
chip	O
.	O
</s>
<s>
The	O
fleet	O
is	O
not	O
close	O
enough	O
to	O
Earth	O
to	O
get	O
there	O
before	O
Xacalite	O
destroys	O
it	O
,	O
so	O
the	O
supercomputer	O
Yggdrassil	O
orders	O
the	O
experimental	O
SA-08	O
Silpheed	B-Device
fighter	O
,	O
a	O
prototype	O
,	O
to	O
be	O
used	O
to	O
destroy	O
Gloire	O
.	O
</s>
<s>
The	O
Sega	B-Device
CD	I-Device
port	O
of	O
Silpheed	B-Device
places	O
polygon	B-General_Concept
ships	O
over	O
a	O
pre-rendered	O
video	O
background	O
;	O
this	O
method	O
is	O
also	O
seen	O
in	O
other	O
video	O
game	O
titles	O
,	O
such	O
as	O
Namco	O
's	O
Galaxian	B-Application
3	I-Application
in	O
1990	O
and	O
StarBlade	B-Application
in	O
1991	O
,	O
Sony	O
Imagesoft	O
's	O
Bram	B-Application
Stoker	I-Application
's	I-Application
Dracula	I-Application
in	O
1992	O
,	O
and	O
Micronet	O
's	O
A/X	B-Application
-101	I-Application
in	O
1994	O
for	O
the	O
Sega	B-Device
CD	I-Device
.	O
</s>
<s>
The	O
Earth	O
's	O
only	O
hope	O
is	O
a	O
small	O
fleet	O
outside	O
the	O
computer	O
's	O
reach	O
,	O
provided	O
with	O
a	O
squadron	O
of	O
SA-77	O
Silpheed	B-Device
dogfighters	O
(	O
referred	O
to	O
as	O
"	O
prototypes	O
"	O
in	O
the	O
manual	O
for	O
the	O
PC	O
version	O
)	O
.	O
</s>
<s>
In	O
1989	O
,	O
Dragon	O
gave	O
the	O
DOS	B-Device
version	O
of	O
the	O
game	O
5	O
out	O
of	O
5	O
stars	O
,	O
concluding	O
that	O
"	O
Silpheed	B-Device
is	O
highly	O
addictive	O
,	O
extremely	O
colorful	O
,	O
and	O
requires	O
hours	O
of	O
enjoyable	O
practice	O
to	O
master	O
"	O
.	O
</s>
<s>
called	O
Silpheed	B-Device
"	O
classic	O
arcade	O
fun	O
with	O
a	O
little	O
more	O
depth	O
than	O
you	O
'll	O
find	O
in	O
many	O
action-oriented	O
games	O
"	O
,	O
but	O
criticized	O
the	O
simple	O
sound	O
effects	O
.	O
</s>
<s>
The	O
four	O
reviewers	O
of	O
Electronic	O
Gaming	O
Monthly	O
gave	O
the	O
Sega	B-Device
CD	I-Device
version	O
scores	O
of	O
9	O
,	O
7	O
,	O
7	O
and	O
7	O
out	O
of	O
10	O
.	O
</s>
<s>
Mega	O
placed	O
the	O
game	O
at	O
#5	O
in	O
their	O
Top	O
Mega-CD	B-Device
Games	O
of	O
All	O
Time	O
,	O
MegaTech	O
magazine	O
said	O
the	O
game	O
was	O
"	O
undoubtedly	O
one	O
of	O
the	O
best	O
games	O
yet	O
for	O
the	O
Mega-CD	B-Device
"	O
.	O
</s>
<s>
A	O
Sega	B-Device
CD	I-Device
prototype	O
version	O
of	O
the	O
game	O
was	O
showcased	O
at	O
the	O
Winter	O
CES	O
in	O
January	O
1993	O
,	O
with	O
a	O
great	O
deal	O
less	O
enemies	O
for	O
gameplay	O
demonstration	O
.	O
</s>
<s>
A	O
sequel	O
was	O
released	O
,	O
Silpheed	B-Device
:	I-Device
The	I-Device
Lost	I-Device
Planet	I-Device
,	O
for	O
the	O
PlayStation	B-Device
2	I-Device
in	O
2000	O
.	O
</s>
<s>
A	O
space	O
combat	O
simulator	O
game	O
was	O
released	O
by	O
Square	O
Enix	O
in	O
2006	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
titled	O
Project	B-Application
Sylpheed	I-Application
.	O
</s>
<s>
It	O
is	O
not	O
directly	O
tied	O
into	O
the	O
Silpheed	B-Device
storyline	O
,	O
but	O
was	O
instead	O
billed	O
as	O
a	O
spiritual	O
successor	O
.	O
</s>
<s>
In	O
2012	O
,	O
an	O
app	O
for	O
Android	O
,	O
called	O
Silpheed	B-Device
Alternative	O
:	O
Menace	O
From	O
Beyond	O
the	O
Stars	O
was	O
made	O
,	O
also	O
considered	O
as	O
a	O
spiritual	O
successor	O
.	O
</s>
<s>
Like	O
Project	B-Application
Sylpheed	I-Application
,	O
it	O
is	O
a	O
fully	O
three-dimensional	O
game	O
.	O
</s>
