<s>
NFL	B-Application
is	O
a	O
series	O
of	O
American	B-Application
football	I-Application
games	O
that	O
are	O
developed	O
by	O
Gameloft	O
,	O
which	O
is	O
supposed	O
to	O
be	O
a	O
simulation	O
of	O
the	O
National	O
Football	O
League	O
.	O
</s>
<s>
The	O
game	O
series	O
is	O
released	O
on	O
iOS	B-Operating_System
,	O
as	O
well	O
as	O
Palm	B-Application
,	O
and	O
was	O
originally	O
released	O
on	O
the	O
Nintendo	B-Device
DS	I-Device
.	O
</s>
<s>
The	O
series	O
first	O
came	O
on	O
the	O
DS	B-Device
as	O
NFL	B-Application
2009	O
in	O
2008	O
.	O
</s>
<s>
Starting	O
with	O
NFL	B-Application
Pro	I-Application
2012	I-Application
,	O
the	O
game	O
became	O
free	O
,	O
even	O
though	O
players	O
still	O
have	O
to	O
pay	O
for	O
extra	O
XP	O
.	O
</s>
<s>
In	O
NFL	B-Application
Pro	I-Application
2013	I-Application
,	O
when	O
the	O
player	O
is	O
in	O
a	O
passing	O
play	O
,	O
the	O
camera	O
will	O
zoom	O
into	O
a	O
first-person	O
view	O
from	O
the	O
quarterback	O
's	O
perspective	O
.	O
</s>
<s>
The	O
series	O
,	O
along	O
with	O
the	O
agreement	O
with	O
the	O
NFL	B-Application
,	O
also	O
has	O
an	O
agreement	O
with	O
the	O
NFL	B-Application
Players	O
Association	O
.	O
</s>
<s>
The	O
series	O
received	O
mixed	O
reviews	O
from	O
players	O
and	O
critics	O
alike	O
,	O
saying	O
that	O
the	O
NFL	B-Application
license	O
was	O
a	O
good	O
touch	O
,	O
but	O
the	B-Application
artificial	I-Application
intelligence	I-Application
makes	O
the	O
game	O
very	O
difficult	O
.	O
</s>
<s>
Gamezebo	O
gave	O
NFL	B-Application
Pro	I-Application
2012	I-Application
2	O
stars	O
out	O
of	O
5	O
,	O
saying	O
that	O
the	O
defensive	O
AI	B-Application
was	O
"	O
atrocious	O
"	O
,	O
as	O
well	O
as	O
the	O
freemium	O
model	O
.	O
</s>
<s>
IGN	O
gave	O
the	O
2011	O
edition	O
a	O
5.5	O
"	O
Mediocre	O
"	O
grade	O
,	O
praising	O
the	O
gameplay	O
on	O
the	O
iPhone	B-Operating_System
4	I-Operating_System
,	O
while	O
criticizing	O
the	O
poor	O
controls	O
and	O
weak	O
passing	O
.	O
</s>
