<s>
Iron	B-Application
Brigade	I-Application
,	O
formerly	O
titled	O
Trenched	B-Application
,	O
is	O
a	O
2011	O
video	O
game	O
,	O
developed	O
by	O
Double	O
Fine	O
Productions	O
,	O
published	O
by	O
Microsoft	O
Studios	O
as	O
a	O
downloadable	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
title	O
on	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
,	O
and	O
set	O
for	O
release	O
as	O
a	O
Microsoft	B-Application
Windows	I-Application
title	O
in	O
2012	O
.	O
</s>
<s>
Announced	O
at	O
the	O
2011	O
Game	O
Developers	O
Conference	O
by	O
Tim	O
Schafer	O
,	O
Iron	B-Application
Brigade	I-Application
is	O
a	O
hybrid	O
tower	B-Application
defense	I-Application
and	O
third-person	O
shooter	O
game	O
,	O
set	O
after	O
World	O
War	O
I	O
in	O
an	O
alternate	O
reality	O
,	O
where	O
the	O
player	O
controls	O
units	O
from	O
the	O
Mobile	O
Trench	O
Brigade	O
to	O
fight	O
off	O
robotic	O
species	O
called	O
the	O
Monovision	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
on	O
the	O
Xbox	B-Application
Live	I-Application
service	O
on	O
June	O
22	O
,	O
2011	O
,	O
with	O
a	O
delayed	O
release	O
in	O
certain	O
European	O
areas	O
due	O
to	O
trademark	O
issues	O
with	O
the	O
title	O
,	O
with	O
its	O
release	O
scheduled	O
for	O
November	O
30	O
,	O
2011	O
but	O
was	O
ultimately	O
released	O
on	O
December	O
1	O
,	O
2011	O
under	O
the	O
alternate	O
name	O
Iron	B-Application
Brigade	I-Application
.	O
</s>
<s>
The	O
name	O
of	O
the	O
title	O
was	O
updated	O
worldwide	O
to	O
Iron	B-Application
Brigade	I-Application
alongside	O
the	O
European	O
release	O
.	O
</s>
<s>
Iron	B-Application
Brigade	I-Application
is	O
considered	O
to	O
be	O
a	O
hybrid	O
game	O
,	O
mixing	O
the	O
gameplay	O
of	O
tower	B-Application
defense	I-Application
games	I-Application
with	O
third-person	O
shooters	O
and	O
incorporating	O
role-playing	O
video	O
game	O
elements	O
.	O
</s>
<s>
After	O
winning	O
a	O
battle	O
,	O
the	O
player	O
gains	O
rewards	O
including	O
new	O
weapons	O
and	O
parts	O
for	O
their	O
trench	O
,	O
and	O
decorative	O
hats	O
similar	O
to	O
Team	B-Application
Fortress	I-Application
2	I-Application
.	O
</s>
<s>
The	O
player	O
will	O
gain	O
experience	O
points	O
towards	O
both	O
personal	O
goals	O
and	O
"	O
Regiment	O
"	O
goals	O
,	O
reflecting	O
progress	O
among	O
the	O
last	O
several	O
Xbox	B-Application
Live	I-Application
players	O
that	O
the	O
player	O
cooperated	O
with	O
.	O
</s>
<s>
In	O
a	O
manner	O
similar	O
to	O
Call	B-Application
of	I-Application
Duty	I-Application
4	I-Application
:	I-Application
Modern	I-Application
Warfare	I-Application
,	O
new	O
weapons	O
and	O
other	O
customization	O
options	O
become	O
available	O
as	O
the	O
player	O
gains	O
level	O
this	O
way	O
.	O
</s>
<s>
Iron	B-Application
Brigade	I-Application
allows	O
for	O
up	O
to	O
four	O
player	O
co-operative	O
gameplay	O
.	O
</s>
<s>
Iron	B-Application
Brigade	I-Application
is	O
the	O
fourth	O
game	O
(	O
including	O
Costume	B-Application
Quest	I-Application
,	O
Stacking	B-Application
,	O
and	O
Sesame	B-Application
Street	I-Application
:	I-Application
Once	I-Application
Upon	I-Application
a	I-Application
Monster	I-Application
)	O
to	O
result	O
from	O
a	O
period	O
called	O
"	O
Amnesia	O
Fortnight	O
"	O
during	O
the	O
2009-2010	O
period	O
where	O
Double	O
Fine	O
's	O
last	O
disc-based	O
release	O
,	O
Brütal	B-Application
Legend	I-Application
,	O
had	O
no	O
publisher	O
.	O
</s>
<s>
When	O
Brutal	B-Application
Legend	I-Application
was	O
completed	O
and	O
Double	O
Fine	O
was	O
told	O
to	O
discontinue	O
work	O
on	O
a	O
sequel	O
,	O
Schafer	O
turned	O
to	O
these	O
four	O
games	O
and	O
sought	O
publishers	O
for	O
them	O
as	O
smaller	O
,	O
downloadable	O
titles	O
.	O
</s>
<s>
The	O
game	O
was	O
originally	O
announced	O
and	O
released	O
in	O
North	O
America	O
as	O
Trenched	B-Application
.	O
</s>
<s>
It	O
was	O
discovered	O
that	O
an	O
earlier	O
registered	O
trademark	O
on	O
a	O
war-themed	O
Portuguese	O
board	O
game	O
"	O
Trench	O
,	O
"	O
owned	O
by	O
Rui	O
Alípio	O
Monteiro	O
,	O
conflicted	O
with	O
Trencheds	B-Application
name	O
.	O
</s>
<s>
Rui	O
Alípio	O
Monteiro	O
has	O
stated	O
they	O
wish	O
to	O
make	O
"	O
Trench	O
"	O
into	O
an	O
electronic	O
game	O
,	O
further	O
complicating	O
Trencheds	B-Application
release	O
.	O
</s>
<s>
Ultimately	O
,	O
at	O
the	O
Gamescom	O
2011	O
conference	O
,	O
Microsoft	O
announced	O
that	O
Trenched	B-Application
would	O
be	O
retitled	O
as	O
Iron	B-Application
Brigade	I-Application
in	O
Europe	O
,	O
with	O
a	O
release	O
set	O
for	O
November	O
2011	O
.	O
</s>
<s>
It	O
was	O
later	O
announced	O
that	O
the	O
name	O
of	O
the	O
game	O
would	O
be	O
updated	O
through	O
a	O
patch	O
in	O
late	O
2011	O
to	O
bring	O
the	O
other	O
releases	O
of	O
the	O
game	O
to	O
meet	O
the	O
new	O
Iron	B-Application
Brigade	I-Application
name	O
,	O
along	O
with	O
the	O
addition	O
of	O
new	O
game	O
modes	O
,	O
weapons	O
,	O
and	O
extras	O
with	O
the	O
game	O
.	O
</s>
<s>
The	O
renamed	O
version	O
and	O
European	O
release	O
were	O
originally	O
scheduled	O
for	O
September	O
2011	O
,	O
but	O
Muir	O
explained	O
that	O
much	O
of	O
the	O
changes	O
had	O
to	O
proceed	O
through	O
various	O
divisions	O
of	O
the	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
game	O
certification	O
process	O
,	O
delaying	O
the	O
updates	O
until	O
November	O
.	O
</s>
<s>
The	O
release	O
of	O
Iron	B-Application
Brigade	I-Application
featured	O
a	O
"	O
Survival	O
"	O
mode	O
where	O
the	O
players	O
must	O
defend	O
as	O
long	O
as	O
possible	O
against	O
100	O
waves	O
of	O
enemies	O
.	O
</s>
<s>
The	O
first	O
downloadable	B-Protocol
content	I-Protocol
for	O
the	O
game	O
,	O
Rise	O
of	O
the	O
Martian	O
Bear	O
,	O
was	O
released	O
on	O
February	O
1	O
,	O
2012	O
,	O
and	O
introduces	O
a	O
new	O
campaign	O
,	O
more	O
items	O
and	O
survival	O
mode	O
maps	O
.	O
</s>
<s>
A	O
Microsoft	B-Application
Windows	I-Application
version	O
was	O
announced	O
for	O
release	O
on	O
August	O
13	O
,	O
2012	O
;	O
this	O
version	O
includes	O
the	O
Martian	O
Bear	O
DLC	B-Protocol
for	O
free	O
.	O
</s>
<s>
In	O
May	O
2015	O
Double	O
Fine	O
was	O
able	O
to	O
fully	O
acquire	O
the	O
rights	O
to	O
Iron	B-Application
Brigade	I-Application
from	O
Microsoft	O
,	O
allowing	O
them	O
to	O
remove	O
Games	B-Application
for	I-Application
Windows	I-Application
Live	I-Application
from	O
the	O
Windows	O
version	O
and	O
replace	O
it	O
with	O
Steamworks	B-Application
.	O
</s>
<s>
On	O
February	O
1	O
,	O
2012	O
,	O
the	O
Rise	O
of	O
the	O
Martian	O
Bear	O
downloadable	B-Protocol
content	I-Protocol
was	O
released	O
.	O
</s>
<s>
The	O
reviewer	O
noted	O
that	O
it	O
had	O
become	O
one	O
of	O
his	O
favourite	O
multiplayer	O
experiences	O
on	O
Xbox	B-Application
Live	I-Application
and	O
is	O
his	O
favourite	O
tower	B-Application
defence	I-Application
game	O
to	O
date	O
.	O
</s>
<s>
Anthony	O
Gallegos	O
called	O
it	O
the	O
best	O
downloadable	O
title	O
he	O
's	O
played	O
all	O
year	O
long	O
,	O
stating	O
that	O
its	O
combination	O
of	O
skillful	O
writing	O
,	O
fun	O
shooting	O
,	O
and	O
tactical	O
tower	B-Application
defense	I-Application
makes	O
for	O
hours	O
of	O
replayable	O
gameplay	O
.	O
</s>
<s>
The	O
Official	O
Xbox	B-Operating_System
Magazine	O
gave	O
it	O
a	O
9	O
out	O
of	O
10	O
rating	O
,	O
praising	O
explosions	O
,	O
balance	O
of	O
action	O
and	O
strategy	O
,	O
and	O
replayability	O
.	O
</s>
<s>
GameSpot	O
gave	O
it	O
an	O
8	O
out	O
of	O
10	O
rating	O
,	O
praising	O
the	O
combination	O
of	O
tower	B-Application
defense	I-Application
and	O
action	O
gameplay	O
,	O
varied	O
missions	O
with	O
replay	O
value	O
,	O
fun	O
solo	O
and	O
co-op	O
modes	O
,	O
and	O
customization	O
but	O
criticizing	O
the	O
chore	O
of	O
collecting	O
scrap	O
.	O
</s>
