<s>
Mass	B-Application
Effect	I-Application
3	I-Application
:	I-Application
Citadel	I-Application
is	O
a	O
downloadable	B-Protocol
content	I-Protocol
(	O
DLC	B-Protocol
)	O
pack	O
developed	O
by	O
BioWare	O
and	O
published	O
by	O
Electronic	O
Arts	O
for	O
the	O
2012	O
action	B-Application
role-playing	I-Application
video	I-Application
game	I-Application
Mass	B-Application
Effect	I-Application
3	I-Application
.	O
</s>
<s>
It	O
was	O
released	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
PlayStation	B-Operating_System
3	I-Operating_System
,	O
and	O
Xbox	B-Operating_System
360	I-Operating_System
in	O
March	O
2013	O
.	O
</s>
<s>
Citadel	O
is	O
the	O
final	O
major	O
downloadable	B-Protocol
content	I-Protocol
pack	O
for	O
Mass	B-Application
Effect	I-Application
3	I-Application
.	O
</s>
<s>
Many	O
critics	O
described	O
it	O
as	O
a	O
"	O
love	O
letter	O
"	O
to	O
the	O
series	O
,	O
and	O
felt	O
that	O
it	O
was	O
the	O
best	O
downloadable	B-Protocol
content	I-Protocol
pack	O
of	O
Mass	B-Application
Effect	I-Application
3	I-Application
.	O
</s>
<s>
Citadel	O
was	O
nominated	O
for	O
Best	O
DLC	B-Protocol
at	O
the	O
2013	O
VGX	O
Awards	O
,	O
but	O
ultimately	O
lost	O
to	O
Far	B-Application
Cry	I-Application
3	I-Application
:	I-Application
Blood	I-Application
Dragon	I-Application
.	O
</s>
<s>
Mass	B-Application
Effect	I-Application
3	I-Application
:	I-Application
Citadel	I-Application
is	O
a	O
downloadable	B-Protocol
content	I-Protocol
(	O
DLC	B-Protocol
)	O
pack	O
for	O
the	O
2012	O
action	B-Application
role-playing	I-Application
video	I-Application
game	I-Application
Mass	B-Application
Effect	I-Application
3	I-Application
.	O
</s>
<s>
There	O
is	O
also	O
a	O
combat	O
arena	O
,	O
which	O
allows	O
the	O
player	O
to	O
participate	O
in	O
horde-style	O
combat	O
matches	O
that	O
resemble	O
the	O
format	O
of	O
the	O
Mass	B-Application
Effect	I-Application
3	I-Application
multiplayer	O
mode	O
.	O
</s>
<s>
Mass	B-Application
Effect	I-Application
3	I-Application
:	I-Application
Citadel	I-Application
is	O
the	O
final	O
piece	O
of	O
single-player	O
DLC	B-Protocol
for	O
Mass	B-Application
Effect	I-Application
3	I-Application
.	O
</s>
<s>
Unlike	O
its	O
immediate	O
predecessor	O
,	O
Omega	O
,	O
which	O
was	O
developed	O
at	O
BioWare	O
Montreal	O
,	O
Citadel	O
was	O
developed	O
out	O
of	O
BioWare	O
Edmonton	O
,	O
the	O
same	O
studio	O
that	O
headed	O
development	O
on	O
the	O
original	O
Mass	B-Application
Effect	I-Application
trilogy	O
.	O
</s>
<s>
In	O
order	O
to	O
provide	O
players	O
with	O
a	O
fitting	O
send-off	O
to	O
the	O
series	O
,	O
the	O
company	O
took	O
an	O
"	O
all	O
hands	O
on	O
deck	O
"	O
approach	O
to	O
the	O
project	O
,	O
which	O
included	O
contributions	O
from	O
all	O
eight	O
staff	O
writers	O
,	O
the	O
return	O
of	O
chief	O
Mass	B-Application
Effect	I-Application
3	I-Application
composer	O
Sam	O
Hulick	O
,	O
and	O
participation	O
from	O
key	O
voice	O
actors	O
such	O
as	O
Seth	O
Green	O
(	O
Jeff	O
"	O
Joker	O
"	O
Moreau	O
)	O
and	O
Raphael	O
Sbarge	O
(	O
Kaidan	O
Alenko	O
)	O
.	O
</s>
<s>
The	O
pack	O
was	O
officially	O
announced	O
on	O
February	O
21	O
,	O
2013	O
,	O
and	O
released	O
worldwide	O
on	O
March	O
5	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
PlayStation	B-Operating_System
3	I-Operating_System
,	O
and	O
Xbox	B-Operating_System
360	I-Operating_System
.	O
</s>
<s>
Because	O
of	O
its	O
large	O
download	O
size	O
,	O
Xbox	B-Operating_System
360	I-Operating_System
users	O
were	O
required	O
to	O
download	O
Citadel	O
in	O
two	O
separate	O
parts	O
,	O
the	O
first	O
of	O
which	O
came	O
with	O
a	O
cost	O
and	O
the	O
second	O
of	O
which	O
was	O
free	O
.	O
</s>
<s>
The	O
pack	O
was	O
not	O
released	O
for	O
the	O
WiiU	B-Device
version	O
of	O
Mass	B-Application
Effect	I-Application
3	I-Application
.	O
</s>
<s>
According	O
to	O
the	O
review	O
aggregator	O
Metacritic	O
,	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
version	O
of	O
Mass	B-Application
Effect	I-Application
3	I-Application
:	I-Application
Citadel	I-Application
received	O
"	O
universal	O
acclaim	O
"	O
while	O
the	O
Microsoft	B-Application
Windows	I-Application
and	O
Xbox	B-Operating_System
360	I-Operating_System
versions	O
received	O
"	O
generally	O
favorable	O
reviews	O
"	O
from	O
video	O
game	O
publications	O
.	O
</s>
<s>
Some	O
outlets	O
,	O
including	O
PlayStation	O
Universe	O
,	O
considered	O
Citadel	O
to	O
be	O
the	O
best	O
downloadable	B-Protocol
content	I-Protocol
pack	O
of	O
Mass	B-Application
Effect	I-Application
3	I-Application
.	O
</s>
<s>
Citadel	O
was	O
later	O
nominated	O
for	O
Best	O
DLC	B-Protocol
at	O
the	O
2013	O
Spike	O
Video	O
Game	O
Awards	O
,	O
but	O
ultimately	O
lost	O
to	O
Far	B-Application
Cry	I-Application
3	I-Application
:	I-Application
Blood	I-Application
Dragon	I-Application
.	O
</s>
<s>
Along	O
those	O
same	O
lines	O
,	O
Tom	O
Senior	O
of	O
PC	O
Gamer	O
predicted	O
that	O
players	O
unfamiliar	O
with	O
Mass	B-Application
Effect	I-Application
or	O
Mass	B-Application
Effect	I-Application
2	I-Application
and	O
their	O
characters	O
would	O
not	O
appreciate	O
the	O
pack	O
as	O
much	O
as	O
more	O
invested	O
players	O
.	O
</s>
<s>
Conversely	O
,	O
some	O
critics	O
such	O
as	O
Kirk	O
Hamilton	O
of	O
Kotaku	O
viewed	O
the	O
fan	O
service	O
very	O
positively	O
,	O
who	O
summarized	O
:	O
"	O
It	O
's	O
an	O
adventure	O
written	O
and	O
designed	O
with	O
nothing	O
but	O
love	O
for	O
Mass	B-Application
Effect	I-Application
,	O
an	O
often	O
goofy	O
,	O
ultimately	O
touching	O
farewell	O
to	O
the	O
world	O
and	O
the	O
characters	O
that	O
we	O
've	O
followed	O
for	O
the	O
last	O
six	O
years.	O
"	O
</s>
<s>
Cobbett	O
made	O
similar	O
observations	O
but	O
also	O
noted	O
that	O
the	O
overall	O
tone	O
of	O
Citadel	O
was	O
significantly	O
lighter	O
than	O
the	O
base	O
Mass	B-Application
Effect	I-Application
3	I-Application
game	O
,	O
making	O
the	O
contrast	O
between	O
the	O
two	O
feel	O
jarring	O
.	O
</s>
<s>
Many	O
critics	O
,	O
including	O
Cobbett	O
,	O
specifically	O
described	O
the	O
end	O
of	O
Citadel	O
as	O
"	O
touching	O
"	O
and	O
opined	O
that	O
it	O
served	O
as	O
a	O
more	O
satisfying	O
conclusion	O
to	O
the	O
series	O
than	O
the	O
actual	O
Mass	B-Application
Effect	I-Application
3	I-Application
ending	O
,	O
which	O
was	O
controversial	O
.	O
</s>
