<s>
is	O
a	O
run	O
and	O
gun	O
arcade	O
game	O
released	O
by	O
Sega	O
in	O
1989	O
and	O
ported	O
to	O
the	O
Sega	B-Operating_System
Mega	I-Operating_System
Drive/Genesis	I-Operating_System
in	O
1990	O
in	O
Japan	O
and	O
1991	O
in	O
North	O
America	O
by	O
Sage	O
's	O
Creation	O
.	O
</s>
<s>
The	O
Mega	B-Operating_System
Drive	I-Operating_System
version	O
of	O
Crack	B-Application
Down	I-Application
was	O
re-released	O
on	O
the	B-Operating_System
Wii	I-Operating_System
Virtual	B-Application
Console	I-Application
in	O
Japan	O
on	O
August	O
7	O
,	O
2007	O
and	O
in	O
PAL	O
regions	O
on	O
September	O
7	O
,	O
2007	O
.	O
</s>
<s>
It	O
also	O
released	O
on	O
Steam	B-Application
on	O
June	O
1	O
,	O
2010	O
.	O
</s>
<s>
Using	O
a	O
top-down	O
perspective	O
(	O
akin	O
to	O
Gauntlet	B-Device
)	O
,	O
the	O
player	O
controls	O
either	O
Ben	O
or	O
Andy	O
,	O
a	O
pair	O
of	O
agents	O
charged	O
with	O
stopping	O
mad	O
scientist	O
Mr.	O
X	O
(	O
Mr.K	O
in	O
the	O
Sega	B-Operating_System
Mega	I-Operating_System
Drive	I-Operating_System
version	O
)	O
from	O
taking	B-Application
over	I-Application
the	I-Application
world	I-Application
,	O
as	O
they	O
make	O
their	O
way	O
through	O
several	O
timed	O
levels	O
,	O
planting	O
bombs	O
and	O
destroying	O
cyborg	B-Application
enemies	O
using	O
guns	O
(	O
the	O
"	O
machine	O
gun	O
"	O
and	O
the	O
"	O
cannon	O
"	O
can	O
be	O
swapped	O
back	O
and	O
forth	O
)	O
and	O
smart	O
bombs	O
(	O
which	O
wipe	O
out	O
all	O
enemies	O
on	O
screen	O
.	O
)	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
Crack	B-Application
Down	I-Application
on	O
their	O
May	O
15	O
,	O
1989	O
issue	O
as	O
being	O
the	O
third	O
most	O
popular	O
arcade	O
game	O
during	O
the	O
previous	O
two	O
weeks	O
.	O
</s>
<s>
They	O
praised	O
Crack	B-Application
Down	I-Application
saying	O
it	O
’s	O
enjoyable	O
to	O
play	O
and	O
praised	O
the	O
two	O
player	O
mode	O
calling	O
it	O
fun	O
.	O
</s>
