<s>
is	O
a	O
multidirectional	O
shooter	O
arcade	B-Application
video	I-Application
game	I-Application
developed	O
and	O
published	O
by	O
Namco	O
in	O
1981	O
.	O
</s>
<s>
It	O
was	O
released	O
by	O
Rock-Ola	O
in	O
North	O
America	O
as	O
Warp	B-Application
Warp	I-Application
.	O
</s>
<s>
The	O
game	O
was	O
ported	O
to	O
the	O
Sord	B-Device
M5	I-Device
and	O
MSX	B-Operating_System
.	O
</s>
<s>
A	O
sequel	O
,	O
Warpman	B-Application
,	O
was	O
released	O
in	O
1985	O
for	O
the	O
Family	O
Computer	O
with	O
additional	O
enemy	O
types	O
,	O
power-ups	O
,	O
and	O
improved	O
graphics	O
and	O
sound	O
.	O
</s>
<s>
In	O
a	O
retrospsective	O
review	O
,	O
AllGame	O
compared	O
its	O
gameplay	O
to	O
Wizard	B-Application
of	I-Application
Wor	I-Application
and	O
Bomberman	B-Device
,	O
describing	O
it	O
as	O
"	O
an	O
obscure	O
but	O
endearing	O
maze	O
shooter	O
"	O
.	O
</s>
