<s>
is	O
a	O
side-scrolling	B-Application
beat	I-Application
'	I-Application
em	I-Application
up	I-Application
produced	O
by	O
Technōs	O
Japan	O
originally	O
released	O
as	O
a	O
coin-operated	O
arcade	B-Application
game	O
in	O
1988	O
.	O
</s>
<s>
It	O
is	O
the	O
first	O
sequel	O
to	O
Double	B-Application
Dragon	I-Application
,	O
released	O
during	O
the	O
previous	O
year	O
.	O
</s>
<s>
Double	B-Application
Dragon	I-Application
II	I-Application
was	O
initially	O
developed	O
as	O
an	O
upgrade	O
kit	O
for	O
the	O
original	O
Double	B-Application
Dragon	I-Application
,	O
but	O
evolved	O
into	O
a	O
stand-alone	O
game	O
due	O
to	O
an	O
increase	O
in	O
memory	O
size	O
,	O
resulting	O
in	O
the	O
developers	O
reusing	O
assets	O
for	O
both	O
games	O
.	O
</s>
<s>
The	O
arcade	B-Application
version	O
of	O
Double	B-Application
Dragon	I-Application
II	I-Application
:	I-Application
The	I-Application
Revenge	I-Application
begins	O
with	O
Marian	O
,	O
the	O
damsel	O
in	O
distress	O
from	O
the	O
original	O
Double	B-Application
Dragon	I-Application
,	O
being	O
shot	O
to	O
death	O
by	O
the	O
leader	O
of	O
the	O
Black	O
Warriors	O
.	O
</s>
<s>
The	O
arcade	B-Application
version	O
of	O
the	O
game	O
is	O
essentially	O
an	O
improved	O
version	O
of	O
the	O
original	O
title	O
.	O
</s>
<s>
The	O
biggest	O
change	O
in	O
the	O
game	O
's	O
controls	O
are	O
in	O
the	O
replacement	O
of	O
the	O
original	O
's	O
punch	O
and	O
kick	O
buttons	O
with	O
two	O
directional-based	O
attack	O
buttons	O
(	O
Left	O
Attack	O
and	O
Right	O
Attack	O
)	O
similar	O
to	O
Renegade	B-Application
.	O
</s>
<s>
Similar	O
to	O
Double	B-Application
Dragon	I-Application
,	O
the	O
game	O
is	O
divided	O
into	O
four	O
areas	O
or	O
"	O
missions	O
"	O
:	O
a	O
heliport	O
,	O
a	O
lumber	O
storehouse	O
,	O
a	O
farm	O
,	O
and	O
the	O
gang	O
's	O
new	O
hideout	O
.	O
</s>
<s>
A	B-Application
console	I-Application
version	I-Application
was	O
released	O
for	O
the	O
Nintendo	O
Entertainment	O
System	O
on	O
January	O
15	O
,	O
1990	O
,	O
developed	O
by	O
Technōs	O
themselves	O
,	O
although	O
it	O
is	O
a	O
very	O
distinct	O
product	O
from	O
the	O
arcade	B-Application
game	O
.	O
</s>
<s>
It	O
was	O
remade	O
by	O
Naxat	O
Soft	O
for	O
the	O
PC	B-General_Concept
Engine	I-General_Concept
in	O
1993	O
.	O
</s>
<s>
Virgin	O
Mastertronic	O
released	O
ports	O
of	O
the	O
arcade	B-Application
version	O
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
,	O
Commodore	O
64	O
,	O
IBM	B-Device
PC	I-Device
compatibles	O
,	O
Amiga	B-Device
,	O
Amstrad	B-Device
CPC	I-Device
,	O
and	O
Atari	B-Device
ST	I-Device
in	O
1989	O
.	O
</s>
<s>
In	O
2013	O
,	O
the	O
Internet	O
Archive	O
put	O
the	O
undeleted	O
assembly	B-Language
sources	O
(	O
DRGNSRC.LZH	O
)	O
of	O
the	O
DOS	O
version	O
available	O
for	O
download	O
.	O
</s>
<s>
The	O
Mega	B-Operating_System
Drive	I-Operating_System
version	O
of	O
Double	B-Application
Dragon	I-Application
II	I-Application
:	I-Application
The	I-Application
Revenge	I-Application
was	O
released	O
by	O
Palsoft	O
exclusively	O
in	O
Japan	O
on	O
December	O
20	O
,	O
1991	O
.	O
</s>
<s>
Unlike	O
the	O
NES	O
version	O
,	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
version	O
is	O
a	O
straight	O
port	O
of	O
the	O
original	O
arcade	B-Application
game	O
,	O
featuring	O
the	O
same	O
stages	O
,	O
techniques	O
and	O
weapons	O
,	O
as	O
well	O
as	O
almost	O
every	O
enemy	O
character	O
,	O
with	O
Jeff	O
being	O
the	O
lone	O
omission	O
.	O
</s>
<s>
However	O
,	O
the	O
characters	O
were	O
redesigned	O
to	O
much	O
smaller	O
proportions	O
and	O
are	O
less	O
colorful	O
than	O
the	O
ones	O
featured	O
in	O
the	O
original	O
arcade	B-Application
version	O
or	O
even	O
the	O
Genesis	O
port	O
of	O
the	O
original	O
Double	B-Application
Dragon	I-Application
by	O
Accolade	O
released	O
a	O
year	O
later	O
in	O
North	O
America	O
and	O
Europe	O
.	O
</s>
<s>
An	O
unrelated	O
Game	B-Device
Boy	I-Device
game	O
was	O
released	O
under	O
the	O
Double	B-Application
Dragon	I-Application
II	I-Application
name	O
in	O
North	O
America	O
and	O
Europe	O
in	O
1991	O
.	O
</s>
<s>
Double	B-Application
Dragon	I-Application
II	I-Application
was	O
re-released	O
in	O
2013	O
alongside	O
the	O
other	O
two	O
arcade	B-Application
games	O
in	O
a	O
compilation	O
titled	O
Double	B-Application
Dragon	I-Application
Trilogy	O
produced	O
by	O
DotEmu	O
,	O
which	O
was	O
released	O
on	O
iOS	B-Application
,	O
Android	B-Application
and	O
Steam	B-Application
platforms	O
.	O
</s>
<s>
The	O
NES	O
version	O
of	O
Double	B-Application
Dragon	I-Application
II	I-Application
was	O
re-released	O
in	O
North	O
America	O
as	O
a	O
downloadable	O
title	O
on	O
all	O
three	O
systems	O
available	O
for	O
the	O
service	O
:	O
Wii	B-Operating_System
,	O
3DS	B-Operating_System
and	O
Wii	B-Device
U	I-Device
.	O
</s>
<s>
The	O
NES	O
version	O
of	O
Double	B-Application
Dragon	I-Application
II	I-Application
was	O
re-released	O
worldwide	O
as	O
a	O
free	O
downloadable	O
title	O
for	O
the	O
Nintendo	B-Application
Switch	I-Application
on	O
June	O
12	O
,	O
2019	O
,	O
provided	O
the	O
user	O
has	O
subscribed	O
to	O
the	O
Nintendo	B-Application
Switch	I-Application
Online	I-Application
service	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
Double	B-Application
Dragon	I-Application
II	I-Application
:	I-Application
The	I-Application
Revenge	I-Application
on	O
their	O
April	O
1	O
,	O
1989	O
issue	O
as	O
being	O
the	O
seventh	O
most-successful	O
table	O
arcade	B-Application
unit	O
of	O
the	O
month	O
.	O
</s>
<s>
In	O
the	O
United	O
Kingdom	O
,	O
the	O
game	O
was	O
number	O
three	O
on	O
the	O
Atari	B-Device
ST	I-Device
sales	O
chart	O
in	O
early	O
1990	O
.	O
</s>
<s>
In	O
2013	O
,	O
Arcade	B-Application
Sushi	O
placed	O
the	O
game	O
9th	O
on	O
their	O
"	O
10	O
Best	O
Retro	O
Beat	B-Application
'	I-Application
Em	I-Application
Ups	I-Application
"	O
.	O
</s>
<s>
Double	B-Application
Dragon	I-Application
II	I-Application
:	O
Wander	O
of	O
the	O
Dragons	O
is	O
a	O
beat	B-Application
'	I-Application
em	I-Application
up	I-Application
loosely	O
based	O
on	O
the	O
arcade	B-Application
game	O
Double	B-Application
Dragon	I-Application
II	I-Application
:	I-Application
The	I-Application
Revenge	I-Application
,	O
developed	O
by	O
Korean	O
game	O
studio	O
GRAVITY	O
and	O
published	O
by	O
Barunson	O
Creative	O
Co	O
.	O
Ltd	O
.	O
</s>
<s>
It	O
was	O
eventually	O
released	O
on	O
April	O
5	O
,	O
2013	O
as	O
a	O
digital	O
download	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
via	O
the	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
service	O
.	O
</s>
