<s>
is	O
a	O
1991	O
video	O
game	O
for	O
the	O
Sega	B-Device
CD	I-Device
,	O
Sega	B-Operating_System
Genesis	I-Operating_System
,	O
and	O
X68000	B-Device
that	O
combines	O
elements	O
of	O
fighting	O
games	O
with	O
platform	O
games	O
and	O
mission	O
elements	O
.	O
</s>
<s>
Players	O
assume	O
the	O
role	O
of	O
a	O
robot	B-Algorithm
operator	O
destined	O
to	O
earn	O
the	O
highest	O
operator	O
rank	O
.	O
</s>
<s>
To	O
do	O
so	O
,	O
the	O
robot	B-Algorithm
–	O
known	O
in	O
the	O
game	O
as	O
a	O
Heavy	O
DOLL	O
–	O
must	O
complete	O
a	O
combat	O
training	O
camp	O
which	O
prompts	O
the	O
2D	O
Platformer	O
stages	O
.	O
</s>
<s>
A	O
sequel	O
,	O
Black	B-Application
Hole	I-Application
Assault	I-Application
,	O
was	O
released	O
in	O
1992	O
.	O
</s>
<s>
The	O
primary	O
machines	O
for	O
Earth	O
's	O
victory	O
came	O
from	O
original	O
Akirovian	O
designed	O
machines	O
:	O
giant	O
remote	O
controlled	O
robots	B-Algorithm
first	O
used	O
to	O
design	O
and	O
repair	O
Earth	O
's	O
satellite	O
and	O
colony	O
structures	O
.	O
</s>
<s>
The	O
robots	B-Algorithm
were	O
favored	O
as	O
Earth	O
's	O
primary	O
line	O
of	O
defense	O
and	O
were	O
dubbed	O
the	O
Heavy	O
D.O.L.L	O
'	O
s	O
(	O
Defensive	O
Offensive	O
Lethal	O
Liberator	O
)	O
.	O
</s>
<s>
Now	O
taking	O
place	O
in	O
2120	O
,	O
the	O
prospect	O
of	O
earning	O
the	O
highest	O
combat	O
ranking	O
for	O
a	O
Heavy	O
D.O.L.L	O
,	O
the	O
rank	O
of	O
Heavy	B-Application
Nova	I-Application
,	O
has	O
become	O
a	O
long	O
desired	O
military	O
rank	O
.	O
</s>
<s>
The	O
player	O
has	O
to	O
destroy	O
every	O
possible	O
enemy	O
robot	B-Algorithm
in	O
the	O
Platformer	O
sections	O
and	O
make	O
it	O
to	O
the	O
end	O
in	O
order	O
to	O
fight	O
the	O
boss	O
awaiting	O
them	O
.	O
</s>
<s>
However	O
,	O
both	O
Heavy	O
D.O.L.L	O
robots	B-Algorithm
,	O
player	O
and	O
enemy	O
,	O
has	O
an	O
energy	O
bar	O
under	O
their	O
health	O
meter	O
;	O
the	O
energy	O
bar	O
measures	O
how	O
much	O
strength	O
the	O
player	O
or	O
enemy	O
has	O
in	O
order	O
to	O
move	O
their	O
robot	B-Algorithm
.	O
</s>
<s>
When	O
the	O
player	O
's	O
energy	O
was	O
depleted	O
to	O
two	O
bars	O
,	O
the	O
player	O
robot	B-Algorithm
cannot	O
move	O
,	O
leaving	O
the	O
player	O
completely	O
vulnerable	O
to	O
enemy	O
attacks	O
.	O
</s>
<s>
Alternatively	O
,	O
the	O
2	O
Player	O
mode	O
pitches	O
two	O
players	O
against	O
each	O
other	O
using	O
all	O
of	O
the	O
enemy	O
robot	B-Algorithm
models	O
encountered	O
in	O
the	O
game	O
.	O
</s>
<s>
Mega	O
said	O
that	O
"	O
badly	O
animated	O
robots	B-Algorithm
,	O
appalling	O
music	O
and	O
terribly	O
unresponsive	O
controls	O
as	O
much	O
fun	O
as	O
colouring	O
in	O
each	O
square	O
on	O
a	O
piece	O
of	O
graph	O
paper	O
with	O
a	O
different	O
pen	O
...	O
with	O
a	O
headache	O
...	O
listening	O
to	O
Max	O
Bygraves.	O
"	O
</s>
<s>
Classic	O
Game	O
Room	O
's	O
Mark	O
Bussler	O
praised	O
its	O
intro	O
cutscene	O
,	O
but	O
called	O
it	O
"	O
possibly	O
the	O
worst	O
video	O
game	O
I	O
've	O
ever	O
played	O
"	O
,	O
criticizing	O
the	O
clumsy	O
controls	O
,	O
uninspired	O
level	O
design	O
,	O
and	O
flawed	O
collision	O
detection	O
that	O
turns	O
the	O
boss	O
fights	O
into	O
a	O
matter	O
of	O
"	O
simply	O
mashing	O
buttons	O
and	O
hoping	O
for	O
the	O
best	O
"	O
.Classic	O
Game	O
Room	O
review	O
,	O
May	O
13	O
,	O
2008Entertainment	O
Weekly	O
gave	O
the	O
game	O
a	O
D+	O
and	O
wrote	O
that	O
"	O
Heavy	O
Nova'''s	O
high-stepping	O
,	O
stainless-steel	O
robot	B-Algorithm
hero	O
may	O
have	O
a	O
certain	O
wacky	O
appeal	O
—	O
if	O
Michael	O
Jackson	O
were	O
the	O
Terminator	O
,	O
this	O
is	O
what	O
his	O
skeleton	O
would	O
look	O
like	O
—	O
but	O
it	O
also	O
has	O
the	O
most	O
ponderous	O
,	O
difficult-to-master	O
moves	O
this	O
side	O
of	O
a	O
t'ai	O
chi	O
tournament	O
.	O
</s>
