<s>
is	O
a	O
1984	O
multidirectional	O
shooter	O
arcade	B-Application
video	I-Application
game	I-Application
developed	O
and	O
published	O
by	O
Namco	O
.	O
</s>
<s>
It	O
is	O
a	O
spin-off	O
from	O
Xevious	B-Application
,	O
as	O
the	O
player	O
's	O
tank	O
first	O
appeared	O
in	O
that	O
game	O
as	O
an	O
enemy	O
.	O
</s>
<s>
It	O
runs	O
on	O
Namco	O
Super	O
Pac-Man	O
hardware	O
but	O
with	O
a	O
video	O
system	O
like	O
that	O
used	O
in	O
Mappy	B-Application
and	O
The	B-Application
Tower	I-Application
of	I-Application
Druaga	I-Application
,	O
and	O
it	O
also	O
uses	O
a	O
DAC	O
for	O
the	O
"	O
Get	O
Ready	O
"	O
speech	O
sample	O
at	O
the	O
start	O
of	O
each	O
round	O
.	O
</s>
<s>
Grobda	B-Application
is	O
a	O
multi-directional	O
shooter	O
similar	O
to	O
the	O
classic	O
Atari	B-General_Concept
2600	I-General_Concept
game	O
Combat	O
(	O
1977	O
)	O
.	O
</s>
<s>
In	O
the	O
game	O
,	O
the	O
player	O
assumes	O
control	O
of	O
the	O
Grobda	B-Application
,	O
a	O
screw-propelled	O
tank	O
capable	O
of	O
firing	O
laser	O
beams	O
at	O
enemies	O
.	O
</s>
<s>
Grobda	B-Application
's	O
laser	O
weapon	O
is	O
capable	O
of	O
destroying	O
most	O
enemies	O
in	O
one	O
hit	O
,	O
although	O
some	O
carry	O
shields	O
that	O
require	O
additional	O
shots	O
to	O
destroy	O
.	O
</s>
<s>
When	O
an	O
enemy	O
is	O
destroyed	O
,	O
it	O
causes	O
an	O
explosion	O
that	O
will	O
destroy	O
any	O
other	O
enemies	O
in	O
its	O
blast	O
radius	O
,	O
including	O
Grobda	B-Application
.	O
</s>
<s>
The	O
remains	O
of	O
the	O
enemy	O
are	O
left	O
in	O
its	O
place	O
,	O
which	O
cause	O
the	O
Grobda	B-Application
to	O
slow	O
down	O
if	O
they	O
move	O
over	O
them	O
.	O
</s>
<s>
Grobda	B-Application
has	O
its	O
own	O
shield	O
that	O
briefly	O
protects	O
them	O
from	O
enemy	O
fire	O
,	O
indicated	O
by	O
the	O
meter	O
at	O
the	O
bottom	O
of	O
the	O
screen	O
.	O
</s>
<s>
Grobda	B-Application
was	O
designed	O
by	O
Masanobu	O
Endo	O
and	O
a	O
small	O
team	O
of	O
developers	O
within	O
Namco	O
.	O
</s>
<s>
Endo	O
is	O
best	O
known	O
as	O
the	O
creator	O
of	O
Xevious	B-Application
(	O
1983	O
)	O
and	O
The	B-Application
Tower	I-Application
of	I-Application
Druaga	I-Application
(	O
1984	O
)	O
,	O
two	O
widely-successful	O
arcade	B-Application
games	O
from	O
the	O
1980s	O
;	O
most	O
of	O
the	O
developers	O
behind	O
Grobda	B-Application
had	O
worked	O
on	O
both	O
titles	O
.	O
</s>
<s>
The	O
Grobda	B-Application
was	O
originally	O
a	O
defenseless	O
enemy	O
in	O
Xevious	B-Application
that	O
attempted	O
to	O
evade	O
the	O
player	O
's	O
air-to-surface	O
bombs	O
.	O
</s>
<s>
Endo	O
believed	O
that	O
the	O
idea	O
of	O
giving	O
Grobda	B-Application
powerful	O
weapons	O
and	O
attacks	O
was	O
a	O
humorous	O
idea	O
,	O
and	O
made	O
for	O
an	O
interesting	O
game	O
concept	O
.	O
</s>
<s>
The	O
soundtrack	O
was	O
composed	O
by	O
Yuriko	O
Keino	O
,	O
known	O
for	O
her	O
work	O
on	O
games	O
such	O
as	O
Dig	B-Application
Dug	I-Application
(	O
1982	O
)	O
.	O
</s>
<s>
She	O
envisioned	O
the	O
tempo	O
for	O
the	O
background	O
humming	O
to	O
become	O
faster	O
as	O
the	O
Grobda	B-Application
moved	O
faster	O
around	O
the	O
playfield	O
.	O
</s>
<s>
Grobda	B-Application
was	O
published	O
in	O
December	B-Application
1984	I-Application
,	O
running	O
on	O
the	O
Namco	O
Super	O
Pac-Man	O
arcade	B-Application
system	O
board	O
.	O
</s>
<s>
In	O
promotional	O
material	O
,	O
Namco	O
used	O
the	O
tagline	O
"	O
Grobda	B-Application
has	O
awakened	O
its	O
combat	O
instinct	O
"	O
.	O
</s>
<s>
Grobda	B-Application
was	O
ported	O
to	O
the	O
PC-8801	B-Device
home	O
computer	O
in	O
Japan	O
the	O
same	O
year	O
,	O
developed	O
by	O
Dempa	O
Software	O
.	O
</s>
<s>
Grobda	B-Application
has	O
been	O
included	O
in	O
multiple	O
Namco	B-Device
Museum	I-Device
collections	O
such	O
as	O
Namco	B-Device
Museum	I-Device
Vol	O
.	O
</s>
<s>
2	O
(	O
1996	O
)	O
,	O
Namco	B-Device
Museum	I-Device
Battle	I-Device
Collection	I-Device
(	O
2005	O
)	O
,	O
Namco	B-Device
Museum	I-Device
Virtual	I-Device
Arcade	I-Device
(	O
2008	O
)	O
,	O
and	O
Namco	B-Application
Museum	I-Application
Megamix	I-Application
(	O
2010	O
)	O
.	O
</s>
<s>
The	O
latter	O
also	O
includes	O
a	O
minigame	O
based	O
on	O
Grobda	B-Application
titled	O
Grobda	B-Application
Remix	O
,	O
where	O
players	O
control	O
Pac-Man	O
as	O
he	O
must	O
destroy	O
as	O
many	O
enemies	O
possible	O
under	O
a	O
time	O
limit	O
.	O
</s>
<s>
Grobda	B-Application
was	O
added	O
to	O
the	O
Wii	O
Virtual	O
Console	O
in	O
Japan	O
on	O
November	O
16	O
,	O
2009	O
,	O
alongside	O
dozens	O
of	O
other	O
Namco	O
arcade	B-Application
games	O
.	O
</s>
<s>
According	O
to	O
the	O
arcade	B-Application
game	O
magazine	O
Game	O
Machine	O
,	O
Grobda	B-Application
was	O
Japan	O
's	O
top-grossing	O
arcade	B-Application
game	O
of	O
December	B-Application
1984	I-Application
by	O
revenue	O
.	O
</s>
<s>
In	O
1998	O
,	O
AllGame	O
labeled	O
Grobda	B-Application
as	O
"	O
a	O
refreshing	O
departure	O
from	O
slower	O
,	O
more	O
methodical	O
tank	O
shooters	O
such	O
as	O
Combat	O
and	O
Armor	B-Application
Ambush	I-Application
"	O
,	O
praising	O
its	O
fast-paced	O
gameplay	O
but	O
criticizing	O
its	O
high	O
difficulty	O
.	O
</s>
<s>
In	O
a	O
2014	O
retrospective	O
review	O
,	O
Hardcore	O
Gaming	O
101	O
said	O
that	O
the	O
game	O
was	O
a	O
lot	O
simpler	O
in	O
gameplay	O
compared	O
to	O
Xevious	B-Application
,	O
and	O
felt	O
mixed	O
towards	O
the	O
game	O
's	O
difficulty	O
level	O
.	O
</s>
<s>
According	O
to	O
former	O
Wolf	O
Team	O
designer	O
Kazuyoshi	O
Inoue	O
,	O
Grobda	B-Application
was	O
an	O
influence	O
for	O
Granada	B-Application
alongside	O
Assault	B-Application
,	O
as	O
co-designer	O
Toshio	O
Toyota	O
was	O
a	O
fan	O
of	O
arcade	B-Application
games	O
.	O
</s>
