<s>
is	O
a	O
1987	O
video	O
game	O
for	O
the	O
MSX2	B-Operating_System
developed	O
by	O
Konami	O
,	O
produced	O
alongside	O
a	B-Application
similarly	I-Application
named	I-Application
game	I-Application
for	O
the	O
Famicom	O
.	O
</s>
<s>
It	O
is	O
in	O
essence	O
a	O
Knightmare-like	O
vertical	O
scrolling	O
shooter	O
with	O
the	O
player	O
viewing	O
his	O
character	O
on	O
the	O
back	O
and	O
enemies	O
and	O
obstacles	O
entering	O
from	O
the	O
top	O
of	O
the	O
screen	O
.	O
</s>
