<s>
Arma	B-Application
2	I-Application
is	O
a	O
military	O
simulation	O
video	O
game	O
developed	O
and	O
published	O
by	O
Bohemia	O
Interactive	O
for	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
It	O
is	O
the	O
sequel	O
to	O
Arma	B-Application
:	I-Application
Armed	I-Application
Assault	I-Application
(	O
Arma	B-Application
:	O
Combat	O
Operations	O
in	O
North	O
America	O
)	O
,	O
and	O
the	O
predecessor	O
to	O
Arma	B-Application
3	I-Application
.	O
</s>
<s>
Arma	B-Application
2	I-Application
saw	O
a	O
limited	O
release	O
in	O
May	O
2009	O
,	O
and	O
a	O
wide	O
release	O
from	O
June	O
2009	O
through	O
July	O
2009	O
.	O
</s>
<s>
An	O
expansion	O
pack	O
titled	O
Arma	B-Application
2	I-Application
:	I-Application
Operation	I-Application
Arrowhead	I-Application
was	O
released	O
in	O
2010	O
.	O
</s>
<s>
It	O
is	O
also	O
considered	O
the	O
official	O
successor	O
of	O
Operation	B-Application
Flashpoint	I-Application
:	I-Application
Cold	I-Application
War	I-Application
Crisis	I-Application
(	O
which	O
has	O
since	O
been	O
renamed	O
to	O
Arma	B-Application
:	I-Application
Cold	I-Application
War	I-Application
Assault	I-Application
by	O
Bohemia	O
Interactive	O
)	O
.	O
</s>
<s>
Arma	B-Application
2	I-Application
is	O
a	O
tactical	O
shooter	O
focused	O
primarily	O
on	O
infantry	B-Protocol
combat	O
,	O
but	O
significant	O
vehicular	O
and	O
aerial	O
combat	O
elements	O
are	O
present	O
.	O
</s>
<s>
The	O
player	O
is	O
able	O
to	O
command	O
AI	B-Application
squad	O
members	O
which	O
adds	O
a	O
real-time	O
strategy	O
element	O
to	O
the	O
game	O
.	O
</s>
<s>
Arma	B-Application
2	I-Application
is	O
set	O
primarily	O
in	O
the	O
fictional	O
Eastern	O
European	O
state	O
of	O
Chernarus	O
(	O
meaning	O
"	O
Black	O
Rus	O
"	O
)	O
.	O
</s>
<s>
Arma	B-Application
2	I-Application
,	O
plus	O
all	O
expansions	O
,	O
features	O
eleven	O
distinct	O
armed	O
factions	O
,	O
each	O
with	O
their	O
own	O
vehicles	O
and	O
weapons	O
.	O
</s>
<s>
The	O
factions	O
included	O
in	O
Arma	B-Application
2	I-Application
are	O
:	O
USMC	O
,	O
Armed	O
Forces	O
of	O
the	O
Russian	O
Federation	O
,	O
Chernarussian	O
Defense	O
Forces	O
(	O
CDF	O
)	O
,	O
Chernarussian	O
Movement	O
of	O
the	O
Red	O
Star	O
(	O
ChDKZ	O
)	O
,	O
National	O
Party	O
(	O
NAPA	O
)	O
,	O
and	O
the	O
citizens	O
of	O
Chernarus	O
.	O
</s>
<s>
Arma	B-Application
2	I-Application
features	O
around	O
80	O
realistically	O
represented	O
weapons	O
with	O
many	O
variants	O
including	O
assault	O
rifles	O
,	O
machine	O
guns	O
,	O
and	O
missile	O
launchers	O
,	O
with	O
realistically	O
simulated	O
ballistics	O
.	O
</s>
<s>
Arma	B-Application
2	I-Application
includes	O
a	O
mission	O
editor	O
which	O
makes	O
it	O
possible	O
to	O
create	O
user-made	O
single	O
player	O
missions	O
or	O
campaigns	O
and	O
multiplayer	O
missions	O
through	O
use	O
of	O
the	O
in-game	O
wizard	O
.	O
</s>
<s>
The	O
syntax	O
and	O
interface	O
have	O
both	O
been	O
kept	O
largely	O
consistent	O
with	O
the	O
Arma	B-Application
series	O
,	O
meaning	O
that	O
missions	O
are	O
ported	O
across	O
games	O
.	O
</s>
<s>
Arma	B-Application
2	I-Application
's	O
single-player	O
campaign	O
takes	O
place	O
in	O
late	O
2009	O
,	O
in	O
the	O
province	O
of	O
South	O
Zagoria	O
in	O
the	O
north-eastern	O
region	O
of	O
the	O
fictional	O
post-Soviet	O
state	O
of	O
Chernarus	O
,	O
as	O
well	O
as	O
the	O
remote	O
Chernarussian	O
island	O
of	O
Útes	O
.	O
</s>
<s>
Arma	B-Application
2	I-Application
was	O
announced	O
in	O
2007	O
.	O
</s>
<s>
It	O
is	O
named	O
after	O
the	O
Latin	O
word	O
"	O
arma	B-Application
"	O
,	O
meaning	O
weapons	O
,	O
soldiers	O
,	O
and	O
war	O
.	O
</s>
<s>
Due	O
to	O
the	O
fact	O
that	O
the	O
previous	O
game	O
in	O
the	O
series	O
was	O
named	O
Armed	B-Application
Assault	I-Application
,	O
Arma	B-Application
2	I-Application
is	O
often	O
referred	O
to	O
as	O
Armed	B-Application
Assault	I-Application
2	I-Application
,	O
albeit	O
in	O
error	O
.	O
</s>
<s>
Although	O
Arma	O
2'''s	O
title	O
is	O
stylized	O
as	O
ArmA	B-Application
II	I-Application
,	O
it	O
is	O
done	O
as	O
an	O
homage	O
to	O
the	O
previous	O
game	O
in	O
the	O
series	O
,	O
because	O
the	O
game	O
's	O
title	O
is	O
a	O
slight	O
contraction	O
of	O
Armed	B-Application
Assault	I-Application
in	O
the	O
first	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
During	O
development	O
,	O
Bohemia	O
Interactive	O
stated	O
at	O
the	O
Electronic	O
Entertainment	O
Expo	O
that	O
Arma	B-Application
2	I-Application
was	O
to	O
have	O
a	O
"	O
roleplaying	O
feel	O
to	O
it	O
"	O
,	O
with	O
in-game	O
events	O
affecting	O
the	O
character	O
as	O
well	O
as	O
the	O
entire	O
campaign	O
.	O
</s>
<s>
The	O
number	O
of	O
agents	B-General_Concept
supported	O
by	O
the	O
engine	O
is	O
limited	O
mainly	O
by	O
computer	O
performance	O
.	O
</s>
<s>
Almost	O
all	O
events	O
in	O
the	O
game	O
are	O
dynamically	O
defined	O
,	O
including	O
most	O
unit	O
speech	O
and	O
AI	B-Application
choices	O
about	O
how	O
to	O
evaluate	O
and	O
respond	O
to	O
specific	O
situations	O
in	O
the	O
game	O
world	O
:	O
scenarios	O
rarely	O
unfold	O
the	O
same	O
way	O
twice	O
–	O
although	O
a	O
side	O
with	O
an	O
overwhelming	O
advantage	O
will	O
tend	O
to	O
win	O
consistently	O
.	O
</s>
<s>
In	O
order	O
to	O
augment	O
player	O
immersion	O
in	O
the	O
gameplay	O
,	O
Arma	B-Application
2	I-Application
features	O
an	O
optional	O
"	O
ambient	O
battle	O
"	O
feature	O
in	O
which	O
the	O
world	O
around	O
the	O
player	O
can	O
automatically	O
be	O
populated	O
by	O
friendly	O
and	O
hostile	O
units	O
who	O
will	O
engage	O
in	O
combat	O
.	O
</s>
<s>
Shortly	O
after	O
the	O
game	O
's	O
German	O
release	O
a	O
1.01	O
patch	O
appeared	O
,	O
with	O
the	O
objective	O
of	O
improving	O
the	O
game	O
's	O
AI	B-Application
.	O
</s>
<s>
Another	O
patch	O
,	O
v1.02	O
,	O
was	O
released	O
on	O
20	O
June	O
2009	O
fixing	O
more	O
AI	B-Application
graphical	O
issues	O
such	O
as	O
the	O
AI	B-Application
walking	O
through	O
walls	O
during	O
cut	O
scenes	O
,	O
driving	O
vehicles	O
with	O
no	O
hands	O
,	O
and	O
unrealistic	O
war	O
reactions	O
by	O
the	O
AI	B-Application
and	O
other	O
various	O
singleplayer	O
campaign	O
problems	O
.	O
</s>
<s>
Changes	O
of	O
note	O
include	O
improved	O
performance	O
within	O
larger	O
cities	O
,	O
enhanced	O
AI	B-Application
driving	O
skills	O
,	O
a	O
raise	O
of	O
the	O
file	O
cache	O
size	O
to	O
4	O
GB	O
RAM	O
or	O
more	O
to	O
take	O
advantage	O
of	O
64-bit	O
operating	O
systems	O
,	O
and	O
improving	O
the	O
game	O
engine	O
's	O
use	O
of	O
processors	O
with	O
4	O
or	O
more	O
cores	O
.	O
</s>
<s>
Currently	O
,	O
the	O
latest	O
patch	O
for	O
Arma	B-Application
2	I-Application
is	O
v1.11	O
(	O
debuted	O
on	O
22	O
December	O
2011	O
,	O
and	O
sharing	O
many	O
features	O
with	O
Arma	B-Application
2	I-Application
Operation	B-Application
Arrowhead	I-Application
patch	O
v1.60	O
)	O
,	O
which	O
brought	O
significant	O
optimisations	O
in	O
multiplayer	O
Netcode	B-Application
and	O
performance	O
,	O
as	O
well	O
as	O
numerous	O
single-player	O
campaign	O
and	O
missions	O
fixes	O
.	O
</s>
<s>
On	O
19	O
August	O
Marek	O
Španěl	O
from	O
Bohemia	O
Interactive	O
announced	O
that	O
the	O
latest	O
beta	O
patches	O
are	O
available	O
to	O
everyone	O
from	O
the	O
official	O
Arma	B-Application
2	I-Application
website	O
.	O
</s>
<s>
Current	O
development	O
of	O
the	O
beta	O
versions	O
has	O
added	O
,	O
among	O
other	O
things	O
,	O
support	O
for	O
more	O
efficient	O
anti-aliasing	O
modes	O
like	O
FXAA	B-Algorithm
and	O
SMAA	O
in	O
the	O
ARMA	B-Application
2	I-Application
:	I-Application
Operation	I-Application
Arrowhead	I-Application
engine	O
.	O
</s>
<s>
The	O
developers	O
have	O
released	O
a	O
complete	O
suite	O
of	O
tools	O
to	O
modify	O
and	O
create	O
new	O
content	O
for	O
Arma	B-Application
2	I-Application
.	O
</s>
<s>
The	O
Real	O
Virtuality	O
Engine	O
includes	O
a	O
built-in	O
scripting	O
language	O
to	O
do	O
tasks	O
such	O
as	O
control	O
AI	B-Application
characters	O
,	O
create	O
triggers	O
and	O
waypoints	O
,	O
and	O
add	O
post-processing	O
effects	O
.	O
</s>
<s>
In	O
April	O
2012	O
,	O
Dean	O
Hall	O
released	O
DayZ	O
,	O
an	O
open	O
world	O
survival	O
horror	O
modification	O
for	O
Arma	B-Application
2	I-Application
which	O
also	O
required	O
the	O
Operation	B-Application
Arrowhead	I-Application
standalone	O
expansion	O
pack	O
to	O
work	O
.	O
</s>
<s>
The	O
demo	O
version	O
of	O
Arma	B-Application
2	I-Application
was	O
released	O
on	O
Bohemia	O
Interactive	O
forums	O
on	O
25	O
June	O
2009	O
,	O
and	O
shortly	O
thereafter	O
on	O
Steam	B-Application
.	O
</s>
<s>
There	O
is	O
also	O
access	O
to	O
a	O
benchmark	O
and	O
limited	O
online	O
multiplayer.Arma	O
2	O
uses	O
different	O
copy	O
protections	O
depending	O
on	O
publisher	O
as	O
well	O
as	O
a	O
in-house	O
coded	O
copy	O
protection	O
solution	O
against	O
tampering	O
known	O
as	O
DEGRADE	B-Application
.	O
</s>
<s>
If	O
the	O
software	O
detects	O
that	O
it	O
was	O
pirated	O
,	O
the	O
DEGRADE-system	O
degrades	O
features	O
of	O
the	O
game	O
,	O
rendering	O
it	O
unplayable	O
.	O
</s>
<s>
The	O
version	O
downloadable	O
from	O
Steam	B-Application
is	O
not	O
limited	O
by	O
number	O
of	O
installs	O
,	O
but	O
other	O
download	O
services	O
may	O
utilize	O
some	O
limits	O
.	O
</s>
<s>
As	O
of	O
version	O
1.05	O
the	O
publishers	O
copy	O
protection	O
have	O
been	O
removed	O
from	O
Arma	B-Application
2	I-Application
although	O
DEGRADE	B-Application
is	O
still	O
included	O
.	O
</s>
<s>
In	O
June	O
2011	O
Bohemia	O
Interactive	O
released	O
a	O
free-to-play	O
version	O
of	O
Arma	B-Application
2	I-Application
,	O
featuring	O
full	O
multiplayer	O
compatibility	O
with	O
the	O
retail	O
version	O
of	O
Arma	B-Application
2	I-Application
.	O
</s>
<s>
In	O
2012	O
,	O
Steam	B-Application
removed	O
ARMA	B-Application
2	I-Application
:	O
Free	O
from	O
its	O
database	O
.	O
</s>
<s>
On	O
22	O
April	O
2010	O
,	O
Bohemia	O
Interactive	O
confirmed	O
that	O
a	O
standalone	O
expansion	O
pack	O
for	O
Arma	B-Application
2	I-Application
,	O
titled	O
Arma	B-Application
2	I-Application
:	I-Application
Operation	I-Application
Arrowhead	I-Application
,	O
would	O
be	O
released	O
worldwide	O
on	O
29	O
June	O
2010	O
.	O
</s>
<s>
Operation	B-Application
Arrowhead	I-Application
includes	O
three	O
new	O
maps	O
,	O
a	O
variety	O
of	O
new	O
units	O
,	O
vehicles	O
and	O
equipment	O
,	O
as	O
well	O
as	O
the	O
eponymous	O
campaign	O
.	O
</s>
<s>
United	O
Nations	O
peacekeepers	O
are	O
also	O
present	O
as	O
an	O
independent	O
faction.Bohemia	O
Interactive	O
has	O
so	O
far	O
released	O
two	O
downloadable	B-Protocol
content	I-Protocol
packs	I-Protocol
for	O
Operation	B-Application
Arrowhead	I-Application
.	O
</s>
<s>
The	O
first	O
DLC	B-Protocol
,	O
titled	O
British	O
Armed	O
Forces	O
,	O
adds	O
units	O
from	O
the	O
British	O
Army	O
,	O
and	O
a	O
new	O
mini-campaign	O
,	O
where	O
players	O
assume	O
the	O
role	O
of	O
a	O
company	O
from	O
the	O
Parachute	O
Regiment	O
operating	O
in	O
Takistan	O
.	O
</s>
<s>
The	O
second	O
DLC	B-Protocol
,	O
titled	O
Private	O
Military	O
Company	O
,	O
includes	O
a	O
new	O
campaign	O
,	O
environment	O
,	O
vehicles	O
,	O
and	O
weapons	O
.	O
</s>
<s>
The	O
third	O
DLC	B-Protocol
,	O
titled	O
Army	O
of	O
the	O
Czech	O
Republic	O
,	O
added	O
the	O
titular	O
Army	O
of	O
the	O
Czech	O
Republic	O
,	O
a	O
new	O
campaign	O
,	O
vehicles	O
,	O
and	O
weapons	O
.	O
</s>
<s>
However	O
,	O
as	O
with	O
the	O
original	O
Armed	B-Application
Assault	I-Application
,	O
the	O
game	O
has	O
received	O
criticism	O
for	O
the	O
number	O
of	O
bugs	O
it	O
contained	O
on	O
release	O
and	O
the	O
quality	O
of	O
the	O
AI	B-Application
.	O
</s>
<s>
In	O
PC	O
Gamer	O
's	O
leaderboard	O
of	O
top	O
100	O
greatest	O
PC	O
games	O
of	O
all	O
time	O
Arma	B-Application
received	O
22nd	O
place	O
.	O
</s>
<s>
On	O
26	O
September	O
2011	O
,	O
ITV	O
broadcast	O
a	O
documentary	O
Exposure	O
:	O
Gaddafi	O
and	O
the	O
IRA	O
,	O
which	O
contained	O
a	O
scene	O
purporting	O
to	O
show	O
Provisional	O
Irish	O
Republican	O
Army	O
fighters	O
shooting	O
down	O
a	O
British	O
military	O
helicopter	O
in	O
1988	O
;	O
the	O
footage	O
was	O
eventually	O
revealed	O
to	O
be	O
gameplay	O
footage	O
from	O
Arma	B-Application
2	I-Application
.	O
</s>
<s>
However	O
,	O
the	O
clip	O
was	O
found	O
to	O
originate	O
from	O
Arma	B-Application
2	I-Application
,	O
being	O
a	O
demonstration	O
of	O
the	O
in-game	O
AH-64	O
Apache	O
's	O
FLIR	O
gun	O
camera	O
.	O
</s>
<s>
Bohemia	O
Interactive	O
is	O
aware	O
of	O
the	O
use	O
of	O
Arma	B-Application
games	O
in	O
military	O
hoaxes	O
.	O
</s>
<s>
Discussing	O
the	O
ITV	O
documentary	O
with	O
PC	O
Gamer	O
in	O
2012	O
,	O
Bohemia	O
CEO	O
Marek	O
Španěl	O
stated	O
that	O
he	O
was	O
"	O
surprised	O
"	O
that	O
Arma	B-Application
gameplay	O
could	O
be	O
confused	O
for	O
real	O
footage	O
so	O
easily	O
.	O
</s>
<s>
It	O
utilises	O
augmented	O
reality.Arma	O
3	O
,	O
Arma	B-Application
2	I-Application
's	O
direct	O
sequel	O
,	O
was	O
released	O
on	O
12	O
September	O
2013	O
.	O
</s>
<s>
Set	O
in	O
the	O
same	O
universe	O
as	O
Arma	B-Application
2	I-Application
in	O
the	O
2030s	O
(	O
establishing	O
Operation	O
Eagle	O
Wing	O
as	O
non-canon	O
)	O
,	O
Arma	O
3''	O
follows	O
a	O
conflict	O
between	O
NATO	O
and	O
the	O
Canton	O
Protocol	O
Strategic	O
Alliance	O
Treaty	O
(	O
CSAT	O
)	O
in	O
the	O
Aegean	O
Sea	O
nation	O
of	O
the	O
Republic	O
of	O
Altis	O
and	O
Stratis	O
.	O
</s>
<s>
The	O
game	O
has	O
seen	O
several	O
DLC	B-Protocol
expansions	O
since	O
,	O
expanding	O
the	O
game	O
's	O
plot	O
through	O
different	O
settings	O
and	O
stories	O
.	O
</s>
