<s>
It	O
was	O
released	O
in	O
Japan	O
for	O
the	O
Family	O
Computer	O
on	O
August	O
1	O
,	O
1986	O
,	O
for	O
the	O
Virtual	B-Application
Console	I-Application
on	O
March	O
20	O
,	O
2007	O
,	O
for	O
the	O
Nintendo	B-Operating_System
3DS	I-Operating_System
on	O
September	O
4	O
,	O
2013	O
and	O
for	O
the	O
Wii	B-Device
U	I-Device
on	O
February	O
4	O
,	O
2015	O
.	O
</s>
<s>
Even	O
Krino	O
Sandra	O
(	O
known	O
as	O
Whirlo	B-Application
in	O
Europe	O
)	O
would	O
be	O
subdued	O
heroically	O
by	O
Zouna	O
;	O
Marvel	O
Land	O
needs	O
a	O
savior	O
.	O
</s>
<s>
Their	O
arcade	O
game	O
ports	O
such	O
as	O
Pac-Man	B-Application
and	O
Xevious	B-Application
were	O
unprecedented	O
successes	O
,	O
and	O
generated	O
a	O
lot	O
of	O
revenue	O
for	O
the	O
company	O
.	O
</s>
<s>
The	O
first	O
of	O
these	O
was	O
Star	B-Application
Luster	I-Application
in	O
1985	O
,	O
a	O
well-received	O
space	O
combat	O
simulation	O
game	O
.	O
</s>
<s>
With	O
games	O
like	O
The	B-Application
Legend	I-Application
of	I-Application
Zelda	I-Application
being	O
hugely	O
popular	O
for	O
the	O
console	O
,	O
Namco	O
decided	O
their	O
next	O
game	O
would	O
be	O
a	O
similar	O
role-playing	O
game	O
,	O
with	O
a	O
large	O
,	O
vast	O
world	O
and	O
unique	O
characters	O
.	O
</s>
<s>
Valkyrie	B-Application
no	I-Application
Bōken	I-Application
was	O
the	O
result	O
of	O
this	O
.	O
</s>
<s>
Joining	O
Namco	O
after	O
graduating	O
college	O
,	O
Fujii	O
was	O
initially	O
assigned	O
to	O
the	O
company	O
's	O
design	O
department	O
,	O
working	O
on	O
the	O
package	O
artwork	O
for	O
games	O
like	O
Sky	B-Application
Kid	I-Application
,	O
Tower	B-Application
of	I-Application
Babel	I-Application
,	O
and	O
Family	O
Tennis	O
.	O
</s>
<s>
Once	O
the	O
division	O
was	O
dissolved	O
,	O
he	O
was	O
transferred	O
to	O
the	O
game	O
development	O
department	O
,	O
becoming	O
a	O
character	O
artist	O
for	O
Valkyrie	B-Application
no	I-Application
Bōken	I-Application
.	O
</s>
<s>
Namco	O
published	O
Valkyrie	B-Application
no	I-Application
Bōken	I-Application
on	O
August	O
1	O
,	O
1986	O
.	O
</s>
<s>
In	O
1998	O
,	O
Namco	O
published	O
Namco	B-Application
Anthology	I-Application
2	I-Application
for	O
the	O
PlayStation	B-Device
,	O
which	O
included	O
ports	O
and	O
enhanced	O
remakes	O
of	O
older	O
Namcot	O
games	O
.	O
</s>
<s>
Valkyrie	B-Application
no	I-Application
Bōken	I-Application
was	O
included	O
,	O
alongside	O
a	O
remake	O
that	O
had	O
a	O
more	O
arcade-like	O
focus	O
rather	O
than	O
the	O
original	O
's	O
traditional	O
role-playing	O
format	O
.	O
</s>
<s>
Namco	B-Application
Anthology	I-Application
2	I-Application
was	O
digitally	O
re-released	O
for	O
the	O
PlayStation	B-Device
Network	I-Device
in	O
2013	O
under	O
the	O
Game	O
Archives	O
label	O
.	O
</s>
<s>
Two	O
mobile	O
phone	O
versions	O
of	O
Valkyrie	B-Application
no	I-Application
Bōken	I-Application
were	O
released	O
in	O
Japan	O
.	O
</s>
<s>
Both	O
of	O
these	O
could	O
be	O
downloaded	O
through	O
the	O
company	O
's	O
official	O
game	O
services	O
through	O
these	O
networks	O
for	O
a	O
monthly	O
fee	O
,	O
and	O
featured	O
graphics	O
in	O
the	O
vein	O
of	O
its	O
arcade	O
sequel	O
Valkyrie	B-Application
no	I-Application
Densetsu	I-Application
.	O
</s>
<s>
The	O
Famicom	O
original	O
was	O
published	O
for	O
the	O
Wii	O
Virtual	B-Application
Console	I-Application
in	O
2007	O
for	O
Japan	O
,	O
and	O
for	O
the	O
3DS	B-Operating_System
Virtual	B-Application
Console	I-Application
in	O
2013	O
and	O
the	O
Wii	B-Device
U	I-Device
Virtual	B-Application
Console	I-Application
in	O
2015	O
.	O
</s>
<s>
Valkyrie	B-Application
no	I-Application
Bōken	I-Application
was	O
followed	O
by	O
Valkyrie	B-Application
no	I-Application
Densetsu	I-Application
,	O
a	O
1989	O
arcade	O
game	O
with	O
simultaneous	O
two-player	O
play	O
and	O
a	O
console	O
conversion	O
released	O
for	O
the	O
PC	B-General_Concept
Engine	I-General_Concept
.	O
</s>
<s>
That	O
year	O
an	O
MSX2	B-Operating_System
game	O
,	O
Valkyrie	B-Application
no	I-Application
Bōken	I-Application
II	O
,	O
was	O
announced	O
;	O
although	O
the	O
game	O
demo	O
was	O
included	O
on	O
DiskStation	O
Compilation	O
No	O
.	O
</s>
<s>
In	O
1992	O
Namco	O
released	O
a	O
prequel	B-Application
to	O
Valkyrie	B-Application
no	I-Application
Bōken	I-Application
,	O
Xandra	B-Application
no	I-Application
Daibōken	I-Application
:	I-Application
Valkyrie	I-Application
to	I-Application
no	I-Application
Deai	I-Application
,	O
for	O
the	O
Super	B-Application
Famicom	I-Application
.	O
</s>
<s>
Featuring	O
Valkyrie	O
's	O
green	O
amphibian-appearing	O
friend	O
,	O
Krino	O
Sandra	O
(	O
Whirlo	B-Application
)	O
,	O
the	O
prequel	B-Application
was	O
released	O
in	O
Europe	O
as	O
Whirlo	B-Application
.	O
</s>
<s>
Valkyrie	B-Application
no	I-Application
Bōken	I-Application
was	O
resurrected	O
for	O
the	O
PlayStation	B-Device
in	O
1998	O
on	O
Namco	B-Application
Anthology	I-Application
2	I-Application
,	O
with	O
an	O
upgraded	O
(	O
linear	O
)	O
version	O
of	O
the	O
game	O
side-by-side	O
with	O
an	O
emulation	O
of	O
the	O
Famicom	O
original	O
.	O
</s>
<s>
In	O
2007	O
,	O
Namco	O
released	O
The	B-Application
Glory	I-Application
of	I-Application
Walküre	I-Application
,	O
an	O
upgrade	O
of	O
the	O
original	O
game	O
with	O
enhanced	O
graphics	O
,	O
for	O
Japanese	O
cell	O
phones	O
using	O
the	O
i-Apli	O
system	O
.	O
</s>
