<s>
is	O
a	O
maze	B-Application
arcade	B-Application
video	I-Application
game	I-Application
developed	O
by	O
Namco	O
in	O
1981	O
and	O
released	O
in	O
1982	B-Application
,	O
distributed	O
in	O
North	O
America	O
by	O
Atari	O
,	O
Inc	O
.	O
</s>
<s>
The	O
player	O
controls	O
Dig	B-Application
Dug	I-Application
to	O
defeat	O
all	O
enemies	O
per	O
stage	O
,	O
by	O
either	O
inflating	O
them	O
to	O
bursting	O
or	O
crushing	O
them	O
underneath	O
rocks	O
.	O
</s>
<s>
Dig	B-Application
Dug	I-Application
was	O
planned	O
and	O
designed	O
by	O
Masahisa	O
Ikegami	O
,	O
with	O
help	O
from	O
Galaga	B-Application
creator	O
Shigeru	O
Yokoyama	O
.	O
</s>
<s>
It	O
was	O
programmed	O
for	O
the	O
Namco	O
Galaga	B-Application
arcade	B-Application
board	O
by	O
Shouichi	O
Fukatani	O
,	O
who	O
worked	O
on	O
many	O
of	O
Namco	O
's	O
earlier	O
arcade	B-Application
games	O
,	O
along	O
with	O
Toshio	O
Sakai	O
.	O
</s>
<s>
Upon	O
release	O
,	O
Dig	B-Application
Dug	I-Application
was	O
well	O
received	O
by	O
critics	O
for	O
its	O
addictive	O
gameplay	O
,	O
cute	O
characters	O
,	O
and	O
strategy	O
.	O
</s>
<s>
During	O
the	O
golden	O
age	O
of	O
arcade	B-Application
video	I-Application
games	I-Application
,	O
it	O
was	O
globally	O
successful	O
,	O
including	O
as	O
the	O
second	O
highest-grossing	O
arcade	B-Application
game	O
of	O
1982	B-Application
in	O
Japan	O
.	O
</s>
<s>
It	O
prompted	O
a	O
long	O
series	O
of	O
sequels	O
and	O
spin-offs	O
,	O
including	O
the	O
Mr.	B-Application
Driller	I-Application
series	O
,	O
for	O
several	O
platforms	O
.	O
</s>
<s>
Dig	B-Application
Dug	I-Application
is	O
a	O
maze	B-Application
video	I-Application
game	I-Application
.	O
</s>
<s>
The	O
player	O
controls	O
protagonist	O
Dig	B-Application
Dug	I-Application
(	O
Taizo	B-Application
Hori	I-Application
)	O
to	O
eliminate	O
each	O
screen	O
's	O
enemies	O
:	O
Pookas	B-Application
,	O
red	O
creatures	O
with	O
comically	O
large	O
goggles	O
,	O
and	O
Fygars	B-Application
,	O
fire-breathing	O
green	O
dragons	O
.	O
</s>
<s>
Dig	B-Application
Dug	I-Application
can	O
use	O
an	O
air	O
pump	O
to	O
inflate	O
them	O
to	O
bursting	O
,	O
or	O
crush	O
them	O
under	O
large	O
falling	O
rocks	O
.	O
</s>
<s>
Once	O
all	O
the	O
enemies	O
have	O
been	O
defeated	O
,	O
Dig	B-Application
Dug	I-Application
progresses	O
to	O
the	O
next	O
stage	O
.	O
</s>
<s>
Enemies	O
chase	O
Dig	B-Application
Dug	I-Application
through	O
dirt	O
in	O
the	O
form	O
of	O
ghostly	O
eyes	O
,	O
only	O
becoming	O
solid	O
in	O
the	O
air	O
where	O
his	O
pump	O
can	O
stun	O
or	O
destroy	O
them	O
.	O
</s>
<s>
In	O
1981	O
,	O
Dig	B-Application
Dug	I-Application
was	O
planned	O
and	O
designed	O
by	O
Masahisa	O
Ikegami	O
,	O
with	O
help	O
from	O
Shigeru	O
Yokoyama	O
,	O
the	O
creator	O
of	O
Galaga	B-Application
.	O
</s>
<s>
The	O
game	O
was	O
programmed	O
for	O
the	O
Namco	O
Galaga	B-Application
arcade	B-Application
system	O
board	O
by	O
Shigeichi	O
Ishimura	O
,	O
a	O
Namco	O
hardware	O
engineer	O
,	O
and	O
the	O
late	O
Shouichi	O
Fukatani	O
,	O
along	O
with	O
Toshio	O
Sakai	O
.	O
</s>
<s>
Tasked	O
with	O
making	O
Dig	B-Application
Dug	I-Application
's	O
movement	O
sound	O
,	O
she	O
could	O
n't	O
make	O
a	O
realistic	O
stepping	O
sound	O
,	O
so	O
she	O
instead	O
made	O
a	O
short	O
melody	O
.	O
</s>
<s>
The	O
team	O
hoped	O
to	O
allow	O
player-designed	O
mazes	B-Application
which	O
could	O
prompt	O
unique	O
gameplay	O
mechanics	O
,	O
contrasting	O
with	O
the	O
pre-set	O
maze	B-Application
exploration	O
in	O
Pac-Man	B-Application
(	O
1980	O
)	O
.	O
</s>
<s>
Dig	B-Application
Dug	I-Application
was	O
released	O
in	O
Japan	O
on	O
February	O
20	O
,	O
1982	B-Application
.	O
</s>
<s>
It	O
was	O
released	O
in	O
North	O
America	O
in	O
April	O
1982	B-Application
by	O
Atari	O
,	O
as	O
part	O
of	O
the	O
licensing	O
deal	O
with	O
Namco	O
.	O
</s>
<s>
Namco	O
released	O
it	O
in	O
Europe	O
on	O
April	O
19	O
,	O
1982	B-Application
.	O
</s>
<s>
The	O
first	O
home	O
conversion	O
of	O
Dig	B-Application
Dug	I-Application
was	O
released	O
for	O
the	O
Atari	B-General_Concept
2600	I-General_Concept
in	O
1983	O
,	O
developed	O
and	O
published	O
by	O
Atari	O
,	O
which	O
was	O
followed	O
by	O
versions	O
for	O
the	O
Atari	B-General_Concept
5200	I-General_Concept
,	O
Atari	B-Device
8-bit	I-Device
family	I-Device
,	O
Commodore	O
64	O
,	O
and	O
Apple	B-Device
II	I-Device
.	O
</s>
<s>
In	O
Japan	O
,	O
it	O
was	O
ported	O
to	O
the	O
Casio	B-Operating_System
PV-1000	I-Operating_System
in	O
1983	O
,	O
the	O
MSX	B-Operating_System
in	O
1984	O
,	O
and	O
the	O
Famicom	O
in	O
1985	O
.	O
</s>
<s>
Gakken	O
produced	O
a	O
handheld	O
LCD	B-Application
tabletop	O
game	O
in	O
1983	O
,	O
which	O
replaced	O
Dig	B-Application
Dug	I-Application
's	O
air	O
pump	O
with	O
a	O
flamethrower	O
to	O
accommodate	O
hardware	O
limitations	O
.	O
</s>
<s>
Namco	O
released	O
a	O
Game	B-Device
Boy	I-Device
conversion	O
in	O
North	O
America	O
only	O
in	O
1992	O
,	O
with	O
an	O
all-new	O
game	O
called	O
"	O
New	O
Dig	B-Application
Dug	I-Application
"	O
where	O
the	O
player	O
must	O
collect	O
keys	O
to	O
open	O
an	O
exit	O
door	O
;	O
this	O
version	O
was	O
later	O
included	O
in	O
the	O
1996	O
Japan-only	O
compilation	O
Namco	O
Gallery	O
Vol	O
.	O
</s>
<s>
2	O
,	O
which	O
also	O
includes	O
Galaxian	B-Application
,	O
The	B-Application
Tower	I-Application
of	I-Application
Druaga	I-Application
,	O
and	O
Famista	O
4	O
.	O
</s>
<s>
A	O
Japanese	O
X68000	B-Device
version	O
was	O
developed	O
by	O
Dempa	O
and	O
released	O
in	O
1995	O
,	O
bundled	O
with	O
Dig	B-Device
Dug	I-Device
II	I-Device
.	O
</s>
<s>
The	O
Famicom	O
version	O
was	O
re-released	O
in	O
Japan	O
for	O
the	O
Game	B-Device
Boy	I-Device
Advance	I-Device
in	O
2004	O
as	O
part	O
of	O
the	O
Famicom	B-Device
Mini	I-Device
series	I-Device
.	O
</s>
<s>
Dig	B-Application
Dug	I-Application
is	O
a	O
mainstay	O
in	O
Namco	O
video	O
game	O
compilations	O
,	O
including	O
Namco	O
Museum	O
Vol	O
.	O
</s>
<s>
3	O
(	O
1998	O
)	O
,	O
Namco	O
Museum	O
64	O
(	O
1999	O
)	O
,	O
Namco	O
Museum	O
50th	O
Anniversary	O
(	O
2005	O
)	O
,	O
Namco	B-Application
Museum	I-Application
Remix	I-Application
(	O
2007	O
)	O
,	O
Namco	B-Application
Museum	I-Application
Essentials	I-Application
(	O
2009	O
)	O
,	O
and	O
Namco	O
Museum	O
Switch	O
(	O
2017	O
)	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
online	O
on	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
in	O
2006	O
,	O
supporting	O
online	O
leaderboards	O
and	O
achievements	O
.	O
</s>
<s>
It	O
is	O
part	O
of	O
Namco	O
Museum	O
Virtual	O
Arcade	B-Application
,	O
and	O
was	O
added	O
to	O
the	B-Device
Xbox	I-Device
One	I-Device
's	O
backward	O
compatibility	O
lineup	O
in	O
2016	O
.	O
</s>
<s>
Dig	B-Application
Dug	I-Application
is	O
a	O
bonus	O
game	O
in	O
Pac-Man	B-Application
Party	I-Application
,	O
alongside	O
the	O
arcade	B-Application
versions	O
of	O
Pac-Man	B-Application
and	O
Galaga	B-Application
.	O
</s>
<s>
Dig	B-Application
Dug	I-Application
was	O
a	O
critical	O
and	O
commercial	O
success	O
upon	O
release	O
,	O
and	O
was	O
praised	O
for	O
its	O
gameplay	O
and	O
layered	O
strategy	O
.	O
</s>
<s>
In	O
Japan	O
,	O
it	O
was	O
the	O
second	O
highest-grossing	O
arcade	B-Application
game	O
of	O
1982	B-Application
,	O
just	O
below	O
Namco	O
's	O
Pole	B-Application
Position	I-Application
.	O
</s>
<s>
In	O
North	O
America	O
,	O
Atari	O
sold	O
22,228	O
Dig	B-Application
Dug	I-Application
arcade	B-Application
cabinets	O
by	O
the	O
end	O
of	O
1982	B-Application
,	O
earning	O
in	O
cabinet	O
sales	O
.	O
</s>
<s>
It	O
was	O
popular	O
during	O
the	O
golden	O
age	O
of	O
arcade	B-Application
video	I-Application
games	I-Application
.	O
</s>
<s>
The	O
2004	O
Famicom	B-Device
Mini	I-Device
release	O
had	O
58,572	O
copies	O
sold	O
,	O
and	O
the	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
version	O
had	O
222,240	O
copies	O
by	O
2011	O
.	O
</s>
<s>
American	O
publication	O
Blip	O
Magazine	O
favorably	O
compared	O
it	O
to	O
games	O
such	O
as	O
Pac-Man	B-Application
for	O
its	O
simple	O
controls	O
and	O
fun	O
gameplay	O
.	O
</s>
<s>
Allgame	O
called	O
it	O
"	O
an	O
arcade	B-Application
and	O
NES	O
classic	O
"	O
,	O
praising	O
its	O
characters	O
,	O
gameplay	O
,	O
and	O
unique	O
premise	O
,	O
and	O
for	O
its	O
easy	O
home	O
platform	O
conversion	O
.	O
</s>
<s>
In	O
1998	O
,	O
Japanese	O
magazine	O
Gamest	O
called	O
it	O
one	O
of	O
the	O
greatest	O
arcade	B-Application
games	O
of	O
all	O
time	O
for	O
its	O
addictiveness	O
and	O
for	O
breaking	O
the	O
traditional	O
"	O
dot-eater	O
"	O
gameplay	O
used	O
in	O
games	O
such	O
as	O
Pac-Man	B-Application
and	O
Rally-X	B-Application
.	O
</s>
<s>
The	O
Killer	B-Application
List	I-Application
of	I-Application
Videogames	I-Application
rated	O
it	O
the	O
sixth	O
most	O
popular	O
coin-op	O
game	O
of	O
all	O
time	O
.	O
</s>
<s>
Electronic	O
Fun	O
with	O
Computers	O
&	O
Games	O
praised	O
the	O
Atari	B-Device
8-bit	I-Device
version	O
for	O
retaining	O
the	O
arcade	B-Application
's	O
entertaining	O
gameplay	O
and	O
for	O
its	O
simple	O
controls	O
.	O
</s>
<s>
Readers	O
of	O
Softline	O
magazine	O
ranked	O
Dig	B-Application
Dug	I-Application
the	O
tenth-worst	O
Apple	B-Device
II	I-Device
and	O
fourth-worst	O
Atari	B-Device
8-bit	I-Device
video	O
game	O
of	O
1983	O
for	O
its	O
subpar	O
quality	O
and	O
failure	O
of	O
consumer	O
expectations	O
.	O
</s>
<s>
Reviewing	O
the	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
digital	O
re-release	O
,	O
IGN	O
liked	O
its	O
presentation	O
,	O
leaderboards	O
,	O
and	O
addictive	O
gameplay	O
,	O
recommending	O
it	O
for	O
old	O
and	O
new	O
fans	O
alike	O
.	O
</s>
<s>
A	O
similar	O
response	O
was	O
echoed	O
by	O
GameSpot	O
for	O
its	O
colorful	O
artwork	O
and	O
faithful	O
arcade	B-Application
gameplay	O
,	O
and	O
by	O
Eurogamer	O
for	O
addictiveness	O
and	O
longevity	O
.	O
</s>
<s>
Dig	B-Application
Dug	I-Application
prompted	O
a	O
fad	O
of	O
"	O
digging	O
games	O
"	O
.	O
</s>
<s>
Clones	O
include	O
the	O
arcade	B-Application
game	O
Zig	B-Application
Zag	I-Application
(	O
1982	B-Application
)	O
,	O
the	O
Atari	B-Device
8-bit	I-Device
family	I-Device
game	O
Anteater	O
(	O
1982	B-Application
)	O
by	O
Romox	O
,	O
Merlin	O
's	O
Pixie	O
Pete	O
,	O
Victory	O
's	O
Cave	O
Kooks	O
(	O
1983	O
)	O
for	O
the	O
Commodore	O
64	O
,	O
and	O
Saguaro	O
's	O
Pumpman	O
(	O
1984	O
)	O
for	O
the	O
TRS-80	B-Device
Color	I-Device
Computer	I-Device
.	O
</s>
<s>
The	O
most	O
successful	O
is	O
Universal	O
Entertainment	O
's	O
arcade	B-Application
game	O
Mr.	B-Application
Do	I-Application
!	I-Application
</s>
<s>
(	O
1982	B-Application
)	O
,	O
released	O
about	O
six	O
months	O
later	O
and	O
surpassing	O
clone	O
status	O
.	O
</s>
<s>
Sega	O
's	O
Borderline	B-Application
(	O
1981	O
)	O
,	O
when	O
it	O
was	O
ported	O
to	O
the	O
Atari	B-General_Concept
2600	I-General_Concept
as	O
Thunderground	O
in	O
1983	O
,	O
was	O
mistaken	O
as	O
a	O
"	O
semi-clone	O
"	O
of	O
Dig	B-Application
Dug	I-Application
and	O
Mr.	B-Application
Do	I-Application
!	I-Application
.	O
</s>
<s>
Boulder	O
Dash	O
(	O
1984	O
)	O
also	O
drew	O
comparisons	O
to	O
Dig	B-Application
Dug	I-Application
.	O
</s>
<s>
Numerous	O
mobile	B-Application
games	I-Application
are	O
clones	O
or	O
variations	O
of	O
Dig	B-Application
Dug	I-Application
,	O
such	O
as	O
Diggerman	O
,	O
Dig	O
Deep	O
,	O
Digby	O
Forever	O
,	O
Dig	O
Out	O
,	O
Puzzle	O
to	O
the	O
Center	O
of	O
Earth	O
,	O
Mine	O
Blitz	O
,	O
I	O
Dig	O
It	O
,	O
Doug	O
Dug	O
,	O
Minesweeper	O
,	O
Dig	O
a	O
Way	O
,	O
and	O
Dig	O
Dog	O
.	O
</s>
<s>
Dig	B-Application
Dug	I-Application
prompted	O
a	O
long	O
series	O
of	O
sequels	O
for	O
several	O
platforms	O
.	O
</s>
<s>
The	O
first	O
of	O
these	O
,	O
Dig	B-Device
Dug	I-Device
II	I-Device
,	O
was	O
released	O
in	O
Japan	O
in	O
1985	O
to	O
less	O
success	O
,	O
opting	O
for	O
an	O
overhead	O
perspective	O
;	O
instead	O
of	O
digging	O
through	O
earth	O
,	O
Dig	B-Application
Dug	I-Application
drills	O
along	O
fault	O
lines	O
to	O
sink	O
pieces	O
of	O
an	O
island	O
into	O
the	O
ocean	O
.	O
</s>
<s>
A	O
second	O
sequel	O
,	O
Dig	B-Application
Dug	I-Application
Arrangement	O
,	O
was	O
released	O
for	O
arcades	O
in	O
1996	O
as	O
part	O
of	O
the	O
Namco	O
Classic	O
Collection	O
Vol	O
.	O
</s>
<s>
2	O
arcade	B-Application
collection	O
,	O
with	O
new	O
enemies	O
,	O
music	O
,	O
power-ups	O
,	O
boss	O
fights	O
,	O
and	O
two-player	O
co-operative	O
play	O
.	O
</s>
<s>
A	O
3D	O
remake	O
of	O
the	O
original	O
,	O
Dig	B-Application
Dug	I-Application
Deeper	I-Application
,	O
was	O
published	O
by	O
Infogrames	O
in	O
2001	O
for	O
Windows	O
.	O
</s>
<s>
A	O
Nintendo	O
DS	O
sequel	O
,	O
Dig	B-Application
Dug	I-Application
:	I-Application
Digging	I-Application
Strike	I-Application
,	O
was	O
released	O
in	O
2005	O
,	O
combining	O
elements	O
from	O
the	O
first	O
two	O
games	O
and	O
adding	O
a	O
narrative	O
link	O
to	O
the	O
Mr.	B-Application
Driller	I-Application
series	O
.	O
</s>
<s>
A	O
massively-multiplayer	O
online	O
game	O
,	O
Dig	B-Protocol
Dug	I-Protocol
Island	I-Protocol
,	O
was	O
released	O
in	O
2008	O
,	O
and	O
was	O
an	O
online	O
version	O
of	O
Dig	B-Device
Dug	I-Device
II	I-Device
;	O
servers	O
lasted	O
for	O
less	O
than	O
a	O
year	O
,	O
discontinued	O
on	O
April	O
21	O
,	O
2009	O
.	O
</s>
<s>
Two	O
Dig	O
Dug-themed	O
slot	O
machines	O
were	O
produced	O
by	O
Japanese	O
company	O
Oizumi	O
in	O
2003	O
,	O
both	O
with	O
small	O
LCD	B-Application
monitors	O
for	O
animated	O
characters	O
.	O
</s>
<s>
Dig	B-Application
Dug	I-Application
is	O
a	O
main	O
character	O
in	O
the	O
ShiftyLook	O
webseries	O
Mappy	O
:	O
The	O
Beat	O
.	O
</s>
<s>
A	O
remix	O
of	O
the	O
Dig	B-Application
Dug	I-Application
soundtrack	O
appears	O
in	O
the	O
PlayStation	O
2	O
game	O
Technic	B-Application
Beat	I-Application
.	O
</s>
<s>
The	O
character	O
Dig	B-Application
Dug	I-Application
was	O
renamed	O
to	O
Taizo	B-Application
Hori	I-Application
,	O
a	O
play	O
on	O
the	O
Japanese	O
phrase	O
"	O
horitai	O
zo	O
"	O
,	O
meaning	O
"	O
I	O
want	O
to	O
dig	O
"	O
.	O
</s>
<s>
He	O
became	O
a	O
prominent	O
character	O
in	O
Namco	O
's	O
own	O
Mr.	B-Application
Driller	I-Application
series	O
,	O
where	O
he	O
is	O
revealed	O
to	O
be	O
the	O
father	O
of	O
Susumu	O
Hori	O
and	O
being	O
married	O
to	O
Baraduke	B-Application
protagonist	O
Masuyo	O
Tobi	O
,	O
who	O
would	O
divorce	O
for	O
unknown	O
reasons	O
.	O
</s>
<s>
Taizo	O
appears	O
as	O
a	O
playable	O
character	O
in	O
Namco	B-Application
Super	I-Application
Wars	I-Application
for	O
the	O
WonderSwan	B-Operating_System
Color	I-Operating_System
and	O
Namco	B-Application
×	I-Application
Capcom	I-Application
for	O
the	O
PlayStation	O
2	O
,	O
only	O
in	O
Japan	O
.	O
</s>
<s>
Taizo	O
appears	O
in	O
the	O
now-defunct	O
web	O
browser	O
game	O
Namco	O
High	O
as	O
the	O
principal	O
of	O
the	O
high	O
school	O
,	O
simply	O
known	O
as	O
"	O
President	O
Dig	B-Application
Dug	I-Application
"	O
.	O
</s>
<s>
Pookas	B-Application
appear	O
in	O
several	O
Namco	O
games	O
,	O
including	O
Sky	B-Application
Kid	I-Application
(	O
1985	O
)	O
,	O
R4	B-Application
:	I-Application
Ridge	I-Application
Racer	I-Application
Type	I-Application
4	I-Application
(	O
1998	O
)	O
,	O
Pac-Man	B-Application
World	I-Application
(	O
1999	O
)	O
,	O
Pro	O
Baseball	O
:	O
Famista	O
DS	O
2011	O
(	O
2011	O
)	O
,	O
and	O
in	O
Nintendo	O
's	O
Super	B-Application
Smash	I-Application
Bros	I-Application
.	I-Application
for	I-Application
Nintendo	I-Application
3DS	I-Application
and	I-Application
Wii	I-Application
U	I-Application
(	O
2014	O
)	O
.	O
</s>
<s>
Dig	B-Application
Dug	I-Application
characters	O
briefly	O
appear	O
in	O
the	O
film	O
Wreck-It	O
Ralph	O
(	O
2012	O
)	O
.	O
</s>
