<s>
Angry	B-Application
Birds	I-Application
Friends	I-Application
(	O
formerly	O
Angry	B-Application
Birds	I-Application
Facebook	B-Application
)	O
is	O
a	O
puzzle	O
video	O
game	O
and	O
the	O
fourth	O
game	O
in	O
the	O
Angry	B-Application
Birds	I-Application
series	O
.	O
</s>
<s>
The	O
game	O
was	O
originally	O
an	O
exclusive	O
Facebook	B-Application
game	O
called	O
Angry	B-Application
Birds	I-Application
Facebook	B-Application
that	O
was	O
released	O
on	O
February	O
13	O
,	O
2012	O
,	O
and	O
was	O
renamed	O
to	O
the	O
current	O
name	O
on	O
May	O
23	O
,	O
2012	O
.	O
</s>
<s>
The	B-Application
Facebook	I-Application
version	O
introduced	O
power-ups	O
to	O
the	O
Angry	B-Application
Birds	I-Application
game	O
series	O
.	O
</s>
<s>
Android	B-Application
and	O
iOS	B-Application
versions	O
were	O
released	O
on	O
May	O
2	O
,	O
2013	O
.	O
</s>
<s>
The	O
mobile	O
version	O
has	O
six-level	O
tournaments	O
that	O
change	O
twice	O
a	O
week	O
,	O
but	O
there	O
are	O
no	O
episodes	O
like	O
other	O
games	O
or	O
the	B-Application
Facebook	I-Application
version	O
.	O
</s>
<s>
Unlike	O
the	O
previous	O
Angry	B-Application
Birds	I-Application
games	O
,	O
this	O
game	O
syncs	O
progress	O
with	O
the	B-Application
Facebook	I-Application
version	O
's	O
weekly	O
tournaments	O
between	O
the	O
player	O
,	O
placeholder	O
scores	O
represented	O
by	O
Red	O
and	O
Chuck	O
,	O
and	O
any	O
of	O
the	O
player	O
's	O
Facebook	B-Application
friends	O
who	O
also	O
play	O
the	O
game	O
.	O
</s>
<s>
The	O
game	O
requires	O
a	O
login	O
to	O
Facebook	B-Application
to	O
sync	O
progress	O
;	O
otherwise	O
one	O
can	O
play	O
without	O
a	O
Facebook	B-Application
account	O
.	O
</s>
<s>
In	O
February	O
2012	O
,	O
the	O
episode	O
"	O
Surf	O
and	O
Turf	O
"	O
was	O
added	O
to	O
the	O
Angry	B-Application
Birds	I-Application
Friends	I-Application
Facebook	B-Application
version	O
and	O
it	O
was	O
also	O
added	O
to	O
the	O
original	B-Application
Angry	I-Application
Birds	I-Application
.	O
</s>
<s>
In	O
July	O
2012	O
,	O
the	O
episode	O
"	O
Pigini	O
Beach	O
"	O
was	O
added	O
to	O
the	O
Angry	B-Application
Birds	I-Application
Friends	I-Application
Facebook	B-Application
version	O
.	O
</s>
<s>
In	O
August	O
2012	O
,	O
Rovio	O
announced	O
a	O
partnership	O
with	O
the	O
punk	O
band	O
Green	O
Day	O
,	O
which	O
led	O
to	O
20	O
new	O
levels	O
of	O
Angry	B-Application
Birds	I-Application
Friends	I-Application
on	O
Facebook	B-Application
featuring	O
all	O
three	O
members	O
of	O
the	O
band	O
.	O
</s>
<s>
In	O
March	O
2013	O
,	O
Rovio	O
added	O
the	O
episode	O
named	O
"	O
Pig	O
Tales	O
"	O
,	O
which	O
has	O
fantasy-themed	O
levels	O
,	O
for	O
the	B-Application
Facebook	I-Application
version	O
that	O
features	O
an	O
all-new	O
power-up	O
and	O
a	O
mushroom	O
hat	O
that	O
can	O
be	O
used	O
in	O
the	O
in-game	O
avatars	O
.	O
</s>
<s>
In	O
March	O
2016	O
,	O
Angry	B-Application
Birds	I-Application
Friends	I-Application
had	O
a	O
special	O
theme	O
"	O
Year	O
In	O
Space	O
"	O
to	O
commemorate	O
the	O
return	O
of	O
the	O
American	O
astronaut	O
Scott	O
Kelly	O
and	O
a	O
cosmonaut	O
after	O
spending	O
one	O
year	O
on	O
the	O
International	O
Space	O
Station	O
.	O
</s>
<s>
In	O
April	O
2013	O
,	O
Rovio	O
revealed	O
that	O
the	B-Application
Facebook	I-Application
game	O
had	O
been	O
installed	O
by	O
over	O
60	O
million	O
users	O
,	O
with	O
1.2	O
million	O
daily	O
active	O
users	O
and	O
10	O
million	O
monthly	O
active	O
users	O
.	O
</s>
