<s>
Call	B-Application
of	I-Application
Duty	I-Application
4	I-Application
:	I-Application
Modern	I-Application
Warfare	I-Application
is	O
a	O
first-person	O
shooter	O
video	O
game	O
in	O
the	O
Call	B-Application
of	I-Application
Duty	I-Application
franchise	O
,	O
developed	O
specifically	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
.	O
</s>
<s>
The	O
DS	B-Device
version	O
was	O
first	O
shown	O
at	O
the	O
E3	O
convention	O
in	O
July	O
2007	O
,	O
and	O
one	O
month	O
later	O
at	O
the	O
Games	O
Convention	O
.	O
</s>
<s>
The	O
majority	O
of	O
the	O
missions	O
are	O
ground-level	O
infantry	B-Protocol
combat	O
,	O
but	O
there	O
are	O
several	O
missions	O
in	O
which	O
the	O
player	O
mans	O
a	O
turret	O
in	O
an	O
aircraft	O
or	O
Humvee	O
.	O
</s>
<s>
The	O
player	O
looks	O
around	O
and	O
aims	O
the	O
currently	O
equipped	O
weapon	O
using	O
the	O
touch	B-Device
screen	I-Device
.	O
</s>
<s>
On	O
foot	O
,	O
the	O
touch	B-Device
screen	I-Device
is	O
also	O
used	O
to	O
switch	O
and	O
reload	O
firearms	O
,	O
switch	O
to	O
grenades	O
,	O
and	O
interact	O
with	O
the	O
game	O
world	O
;	O
the	O
directional	O
pad	O
is	O
used	O
to	O
move	O
and	O
the	O
shoulder	O
buttons	O
fire	O
the	O
current	O
firearm	O
.	O
</s>
<s>
To	O
utilize	O
unique	O
features	O
of	O
the	O
DS	B-Device
,	O
this	O
version	O
includes	O
several	O
touch-screen	B-Device
features	O
,	O
including	O
hacking	O
terminals	O
and	O
bomb	O
disarmament	O
.	O
</s>
<s>
Inventory	O
controls	O
and	O
an	O
overhead	O
map	O
and	O
radar	O
are	O
located	O
on	O
the	O
touch	B-Device
screen	I-Device
.	O
</s>
<s>
The	O
DS	B-Device
offers	O
local	O
multi-player	O
via	O
built-in	O
wireless	O
,	O
but	O
does	O
not	O
offer	O
the	O
online	O
multiplayer	O
central	O
to	O
the	O
console	B-Application
and	I-Application
PC	I-Application
versions	I-Application
.	O
</s>
<s>
The	O
game	O
features	O
twelve	O
single	O
player	O
levels	O
in	O
its	O
campaign	O
,	O
as	O
well	O
as	O
several	O
multiplayer	O
modes	O
including	O
deathmatch	O
,	O
team	O
deathmatch	O
,	O
and	O
capture	B-Application
the	I-Application
flag	I-Application
.	O
</s>
<s>
The	O
DS	B-Device
version	O
of	O
the	O
game	O
,	O
as	O
is	O
standard	O
for	O
a	O
Call	B-Application
of	I-Application
Duty	I-Application
title	O
,	O
allows	O
the	O
player	O
to	O
assume	O
the	O
roles	O
of	O
several	O
soldiers	O
,	O
who	O
are	O
either	O
affiliated	O
with	O
the	O
British	O
SAS	O
(	O
Snowman	O
)	O
or	O
the	O
U.S.	O
Marines	O
(	O
Cpl	O
.	O
</s>
<s>
Unlike	O
the	O
console	B-Application
and	I-Application
PC	I-Application
versions	I-Application
of	O
the	O
game	O
,	O
players	O
do	O
not	O
directly	O
influence	O
the	O
outcome	O
of	O
the	O
war	O
,	O
but	O
instead	O
take	O
part	O
in	O
missions	O
that	O
occur	O
during	O
the	O
events	O
of	O
the	O
main	O
game	O
,	O
with	O
a	O
focus	O
less	O
on	O
the	O
main	O
attempts	O
to	O
end	O
the	O
conflict	O
and	O
more	O
on	O
the	O
supporting	O
role	O
of	O
various	O
other	O
soldiers	O
.	O
</s>
<s>
According	O
to	O
an	O
interview	O
with	O
IGN	O
before	O
the	O
DS	B-Device
version	O
was	O
first	O
shown	O
at	O
the	O
E3	O
convention	O
in	O
2007	O
,	O
Activision	O
said	O
they	O
worked	O
on	O
the	O
game	O
with	O
n-Space	O
since	O
the	O
fall	O
of	O
2006	O
.	O
</s>
<s>
They	O
were	O
able	O
to	O
pack	O
as	O
much	O
of	O
the	O
Call	B-Application
of	I-Application
Duty	I-Application
experience	O
onto	O
the	O
DS	B-Device
as	O
possible	O
and	O
were	O
proud	O
that	O
there	O
"	O
are	O
a	O
ton	O
of	O
effects	O
,	O
but	O
the	O
environments	O
are	O
simply	O
stunning.	O
"	O
</s>
<s>
They	O
also	O
said	O
that	O
they	O
were	O
"	O
excited	O
about	O
bringing	O
Call	B-Application
of	I-Application
Duty	I-Application
to	O
the	O
DS	B-Device
for	O
the	O
first	O
time.	O
"	O
</s>
<s>
As	O
with	O
all	O
games	O
in	O
the	O
Call	B-Application
of	I-Application
Duty	I-Application
franchise	O
,	O
the	O
music	O
of	O
the	O
game	O
was	O
composed	O
by	O
Michael	O
Giacchino	O
recording	O
the	O
full	O
orchestral	O
scores	O
live	O
.	O
</s>
<s>
Though	O
Barton	O
wrote	O
most	O
of	O
the	O
music	O
featured	O
in	O
Call	B-Application
of	I-Application
Duty	I-Application
4	O
,	O
IGN	O
said	O
that	O
the	O
score	O
was	O
"	O
definitely	O
a	O
team	O
effort.	O
"	O
</s>
<s>
The	O
Nintendo	B-Device
DS	I-Device
version	O
received	O
positive	O
reviews	O
,	O
holding	O
an	O
average	O
score	O
of	O
75	O
out	O
of	O
100	O
based	O
on	O
22	O
reviews	O
on	O
Metacritic	O
—	O
indicating	O
"	O
generally	O
favorable	O
reviews.	O
"	O
</s>
<s>
IGN	O
scored	O
Call	B-Application
of	I-Application
Duty	I-Application
4'''s	O
DS	B-Device
version	O
at	O
7.8/10	O
,	O
praising	O
elements	O
including	O
a	O
surprising	O
level	O
of	O
complexity	O
for	O
the	O
hardware	O
,	O
"	O
impressive	O
sound	O
production	O
all	O
around	O
"	O
,	O
fun	O
gameplay	O
,	O
and	O
enjoyable	O
multiplayer	O
.	O
</s>
<s>
GameSpot''	O
scored	O
the	O
game	O
7.0/10	O
,	O
praising	O
technical	O
achievements	O
of	O
the	O
engine	O
and	O
audio	O
which	O
"	O
...	O
deliver	O
the	O
true	O
Call	B-Application
of	I-Application
Duty	I-Application
experience	O
"	O
.	O
</s>
<s>
They	O
also	O
criticized	O
the	O
game	O
's	O
controls	O
and	O
lack	O
of	O
online	O
multiplayer	O
,	O
noting	O
"	O
...	O
the	O
DS	B-Device
version	O
does	O
n't	O
offer	O
any	O
of	O
the	O
online	O
modes	O
that	O
its	O
console	O
counterparts	O
do	O
,	O
which	O
means	O
that	O
your	O
interest	O
in	O
the	O
game	O
will	O
probably	O
wane	O
significantly	O
after	O
you	O
complete	O
that	O
initial	O
play-through.	O
"	O
</s>
