<s>
Counter-Strike	B-Application
Online	I-Application
(	O
CSO	O
)	O
is	O
a	O
tactical	O
first-person	O
shooter	O
video	O
game	O
,	O
targeted	O
towards	O
Asia	O
's	O
gaming	O
market	O
released	O
in	O
2008	O
.	O
</s>
<s>
It	O
is	O
based	O
on	O
Counter-Strike	B-Application
and	O
was	O
developed	O
by	O
Nexon	O
with	O
oversight	O
from	O
license-holder	O
Valve	O
.	O
</s>
<s>
It	O
uses	O
a	O
micropayment	O
model	O
that	O
is	O
managed	O
by	O
a	O
custom	O
version	O
of	O
Steam	B-Application
.	O
</s>
<s>
The	O
game	O
features	O
a	O
variety	O
of	O
additions	O
over	O
the	O
international	O
Counter-Strike	B-Application
,	O
such	O
as	O
the	O
introduction	O
of	O
female	O
characters	O
,	O
numerous	O
new	O
weapons	O
and	O
skins	O
for	O
previous	O
weapons	O
.	O
</s>
<s>
Counter-Strike	B-Application
Online	I-Application
itself	O
is	O
free	O
to	O
play	O
,	O
but	O
some	O
weapons	O
are	O
bought	O
using	O
points	O
purchased	O
with	O
real	O
money	O
.	O
</s>
<s>
Counter-Strike	B-Application
Online	I-Application
includes	O
classic	O
Counter-Strike	B-Application
modes	O
and	O
added	O
more	O
.	O
</s>
<s>
The	O
World	O
Cyber	O
Games	O
2012	O
Grand	O
Finals	O
in	O
Kunshan	O
hosted	O
a	O
Counter-Strike	B-Application
Online	I-Application
tournament	O
,	O
at	O
which	O
teams	O
from	O
China	O
,	O
Taiwan	O
,	O
Malaysia	O
and	O
South	O
Korea	O
competed	O
.	O
</s>
<s>
On	O
April	O
5	O
,	O
2012	O
,	O
Nexon	O
and	O
Valve	O
announced	O
a	O
partnership	O
to	O
develop	O
Counter-Strike	B-Application
Online	I-Application
2	O
,	O
which	O
is	O
based	O
on	O
an	O
enhanced	O
Source	B-Application
engine	I-Application
and	O
offered	O
enhanced	O
graphics	O
,	O
powerful	O
impact	O
physics	O
,	O
and	O
more	O
new	O
features	O
.	O
</s>
<s>
It	O
has	O
been	O
confirmed	O
that	O
Counter-Strike	B-Application
Online	I-Application
2	O
uses	O
the	O
same	O
Source	B-Application
version	O
as	O
Counter-Strike	B-Application
:	I-Application
Source	I-Application
.	O
</s>
<s>
Maps	O
in	O
this	O
game	O
are	O
taken	O
from	O
Counter-Strike	B-Application
:	I-Application
Source	I-Application
.	O
</s>
<s>
The	O
weapons	O
are	O
taken	O
from	O
Counter-Strike	B-Application
:	I-Application
Source	I-Application
as	O
well	O
as	O
adding	O
new	O
weapons	O
.	O
</s>
<s>
Counter-Strike	B-Application
Nexon	O
:	O
Zombies	O
was	O
released	O
via	O
Steam	B-Application
on	O
October	O
7	O
,	O
2014	O
.	O
</s>
<s>
This	O
is	O
the	O
first	O
adaptation	O
of	O
Counter-Strike	B-Application
Online	I-Application
to	O
be	O
published	O
via	O
Valve	O
's	O
Steam	B-Application
content	I-Application
delivery	I-Application
system	O
.	O
</s>
<s>
Counter-Strike	B-Application
Nexon	O
:	O
Zombies	O
was	O
renamed	O
to	O
Counter-Strike	B-Application
Nexon	O
:	O
Studio	O
in	O
2019	O
.	O
</s>
<s>
Counter-Strike	B-Application
Online	I-Application
was	O
discontinued	O
in	O
Singapore/Malaysia	O
(	O
ENGLISH	O
)	O
six	O
months	O
later	O
.	O
</s>
<s>
Online	O
reviewer	O
MMOhuts	O
gave	O
Counter-Strike	B-Application
Online	I-Application
a	O
3/5	O
rating	O
.	O
</s>
