<s>
Cratermaze	B-Application
,	O
known	O
in	O
Japan	O
as	O
,	O
is	O
a	O
video	O
game	O
released	O
in	O
1989	O
for	O
the	O
TurboGrafx-16	B-General_Concept
video	B-Device
game	I-Device
console	I-Device
.	O
</s>
<s>
The	O
game	O
was	O
re-released	O
by	O
Hudson	O
Soft	O
for	O
the	O
Virtual	B-Application
Console	I-Application
on	O
August	O
13	O
,	O
2007	O
in	O
North	O
America	O
,	O
and	O
on	O
August	O
17	O
,	O
2007	O
in	O
Europe	O
and	O
Australia	O
.	O
</s>
<s>
Cratermaze	B-Application
is	O
a	O
variation	O
of	O
the	O
Japanese	O
games	O
Booby	B-Application
Kids	I-Application
(	O
released	O
for	O
Famicom	O
)	O
and	O
Kid	O
no	O
Hore	O
Hore	O
Daisakusen	O
(	O
1987	O
)	O
,	O
an	O
arcade	O
game	O
released	O
by	O
Nihon	O
Bussan	O
.	O
</s>
<s>
A	O
number	O
of	O
contemporary	O
reviews	O
compare	O
the	O
maze-like	O
gameplay	O
to	O
Hudson	O
's	O
Bomberman	B-Application
series	O
.	O
</s>
<s>
In	O
the	O
game	O
,	O
the	O
hero	O
Opi	O
(	O
Doraemon	B-Application
in	O
the	O
Japanese	O
version	O
)	O
is	O
traveling	O
through	O
time	O
with	O
four	O
of	O
his	O
friends	O
when	O
they	O
are	O
captured	O
by	O
the	O
villain	O
Zenzombie	O
.	O
</s>
<s>
He	O
travels	O
through	O
various	O
eras	O
in	O
time	O
(	O
modern	O
,	O
samurai	B-Application
,	O
future	O
,	O
World	O
War	O
II	O
and	O
prehistory	O
)	O
,	O
collecting	O
treasure	O
to	O
open	O
doors	O
to	O
the	O
next	O
era	O
,	O
and	O
kills	O
enemies	O
by	O
digging	O
holes	O
and	O
burying	O
the	O
enemies	O
.	O
</s>
<s>
In	O
the	O
Japanese	O
version	O
,	O
Doraemon	B-Application
replaces	O
the	O
titular	O
character	O
Opi	O
,	O
while	O
Opi	O
's	O
friends	O
are	O
replaced	O
with	O
other	O
Doraemon	B-Application
characters	O
.	O
</s>
