<s>
is	O
a	O
run	O
and	O
gun	O
video	O
game	O
developed	O
by	O
SNK	O
Playmore	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
.	O
</s>
<s>
It	O
is	O
the	O
seventh	O
and	O
final	O
title	O
in	O
the	O
main	O
Metal	B-Application
Slug	I-Application
series	I-Application
.	O
</s>
<s>
Several	O
years	O
following	O
the	O
events	O
of	O
Metal	B-Application
Slug	I-Application
4	I-Application
,	O
5	B-Application
,	O
and	O
3D	B-Application
,	O
the	O
Peregrine	O
Falcon	O
Strike	O
Force	O
,	O
the	O
SPARROWS	O
,	O
and	O
the	O
Ikari	B-Application
Warriors	I-Application
are	O
once	O
again	O
on	O
a	O
search	O
for	O
General	O
Morden	O
and	O
his	O
army	O
,	O
this	O
time	O
on	O
a	O
giant	O
island	O
landfill	O
that	O
has	O
been	O
converted	O
into	O
a	O
military	O
fortress	O
,	O
in	O
order	O
to	O
stop	O
his	O
latest	O
coup	O
d'état	O
.	O
</s>
<s>
Morden	O
escapes	O
in	O
a	O
giant	O
mechanical	O
Kraken	B-Device
and	O
confronts	O
them	O
over	O
a	O
lake	O
of	O
molten	O
lava	O
.	O
</s>
<s>
Metal	B-Application
Slug	I-Application
7	I-Application
uses	O
the	O
Nintendo	B-Device
DS	I-Device
touchscreen	O
as	O
a	O
map	O
of	O
the	O
level	O
,	O
making	O
it	O
easier	O
for	O
the	O
player	O
to	O
look	O
at	O
the	O
level	O
and	O
where	O
to	O
get	O
power	O
ups	O
or	O
captured	O
prisoners	O
.	O
</s>
<s>
The	O
music	O
in	O
the	O
game	O
was	O
composed	O
by	O
Toshikazu	O
Tanaka	O
,	O
following	O
on	O
from	O
his	O
work	O
on	O
Metal	B-Application
Slug	I-Application
4	I-Application
,	O
Metal	B-Application
Slug	I-Application
5	I-Application
,	O
and	O
Metal	B-Application
Slug	I-Application
3D	I-Application
.	O
</s>
<s>
A	O
revised	O
version	O
of	O
Metal	B-Application
Slug	I-Application
7	I-Application
,	O
titled	O
Metal	B-Application
Slug	I-Application
XX	O
,	O
was	O
released	O
on	O
December	O
23	O
,	O
2009	O
in	O
Japan	O
and	O
North	O
America	O
on	O
February	O
23	O
,	O
2010	O
by	O
Atlus	O
USA	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
.	O
</s>
<s>
Metal	B-Application
Slug	I-Application
XX	O
was	O
released	O
on	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
on	O
May	O
19	O
,	O
2010	O
;	O
it	O
is	O
also	O
backwards	O
compatible	O
on	O
Xbox	B-Device
One	I-Device
,	O
released	O
on	O
November	O
12	O
,	O
2015	O
.	O
</s>
<s>
The	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
version	O
came	O
worldwide	O
in	O
May	O
30	O
,	O
2018	O
.	O
</s>
<s>
Metal	B-Application
Slug	I-Application
XX	O
was	O
released	O
for	O
Microsoft	B-Application
Windows	I-Application
via	O
Steam	B-Application
in	O
January	O
2019	O
.	O
</s>
<s>
The	O
screen	O
and	O
graphics	O
are	O
not	O
re-dimensioned	O
anymore	O
,	O
like	O
in	O
the	O
Nintendo	B-Device
DS	I-Device
.	O
</s>
<s>
Rebel	O
Troops	O
reuse	O
their	O
sound	O
effects	O
from	O
Metal	B-Application
Slug	I-Application
6	O
(	O
except	O
for	O
Xbox	B-Device
360/One	O
)	O
.	O
</s>
<s>
Mission	O
5	B-Application
:	O
</s>
<s>
The	O
new	O
announcer	O
shouts	O
"	O
Final	O
Mission	O
Start	O
"	O
instead	O
of	O
the	O
Metal	B-Application
Slug	I-Application
6	O
announcer	O
.	O
</s>
<s>
Metal	B-Application
Slug	I-Application
7	I-Application
and	O
the	O
PSP	B-Operating_System
and	O
Xbox	B-Device
360	O
versions	O
received	O
"	O
mixed	O
or	O
average	O
reviews	O
"	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Famitsu	O
gave	O
it	O
a	O
score	O
of	O
two	O
sevens	O
,	O
one	O
eight	O
,	O
and	O
one	O
six	O
for	O
the	O
original	O
Metal	B-Application
Slug	I-Application
7	I-Application
,	O
and	O
29	O
out	O
of	O
40	O
for	O
the	O
PSP	B-Operating_System
version	O
of	O
Metal	B-Application
Slug	I-Application
XX	O
.	O
</s>
