<s>
Counter-Strike	B-Application
(	O
also	O
known	O
as	O
Half-Life	B-Application
:	I-Application
Counter-Strike	I-Application
or	O
Counter-Strike	B-Application
1.6	I-Application
)	O
is	O
a	O
tactical	O
first-person	O
shooter	O
game	O
developed	O
by	O
Valve	O
.	O
</s>
<s>
It	O
was	O
initially	O
developed	O
and	O
released	O
as	O
a	O
Half-Life	B-Application
modification	O
by	O
Minh	O
"	O
Gooseman	O
"	O
Le	O
and	O
Jess	O
Cliffe	O
in	O
1999	O
,	O
before	O
Le	O
and	O
Cliffe	O
were	O
hired	O
and	O
the	O
game	O
's	O
intellectual	O
property	O
acquired	O
.	O
</s>
<s>
Counter-Strike	B-Application
was	O
released	O
by	O
Valve	O
for	O
Microsoft	B-Application
Windows	I-Application
in	O
2000	O
,	O
and	O
is	O
the	O
first	O
installment	O
in	O
the	O
Counter-Strike	B-Application
series	O
.	O
</s>
<s>
Several	O
remakes	O
and	O
ports	O
were	O
released	O
on	O
Xbox	B-Operating_System
,	O
as	O
well	O
as	O
OS	B-Operating_System
X	I-Operating_System
and	O
Linux	B-Application
.	O
</s>
<s>
Counter-Strike	B-Application
is	O
a	O
first-person	O
shooter	O
game	O
in	O
which	O
players	O
join	O
either	O
the	O
terrorist	O
team	O
,	O
the	O
counter-terrorist	O
team	O
,	O
or	O
become	O
spectators	O
.	O
</s>
<s>
A	O
player	O
can	O
choose	O
to	O
play	O
as	O
one	O
of	O
eight	O
different	O
default	O
character	O
models	O
(	O
four	O
for	O
each	O
side	O
,	O
although	O
Counter-Strike	B-Application
:	I-Application
Condition	I-Application
Zero	I-Application
added	O
two	O
extra	O
models	O
,	O
bringing	O
the	O
total	O
to	O
ten	O
)	O
.	O
</s>
<s>
The	O
scoreboard	O
displays	O
team	O
scores	O
in	O
addition	O
to	O
statistics	O
for	O
each	O
player	O
:	O
name	O
,	O
kills	O
,	O
deaths	O
,	O
and	O
ping	B-Application
(	O
in	O
milliseconds	O
)	O
.	O
</s>
<s>
Spectators	O
are	O
generally	O
able	O
to	O
watch	O
the	O
rest	O
of	O
the	O
round	O
from	O
multiple	O
selectable	O
views	O
,	O
although	O
some	O
servers	O
disable	O
some	O
of	O
these	O
views	O
to	O
prevent	O
dead	O
players	O
from	O
relaying	O
information	O
about	O
living	O
players	O
to	O
their	O
teammates	O
through	O
alternative	O
media	O
(	O
most	O
notably	O
voice	O
in	O
the	O
case	O
of	O
Internet	O
cafes	O
and	O
Voice	B-Application
over	I-Application
IP	I-Application
programs	O
such	O
as	O
TeamSpeak	B-Language
or	O
Ventrilo	B-Operating_System
)	O
.	O
</s>
<s>
Counter-Strike	B-Application
began	O
as	O
a	O
mod	O
of	O
Half-Lifes	O
engine	O
GoldSrc	B-Application
.	O
</s>
<s>
Throughout	O
university	O
,	O
Le	O
had	O
worked	O
on	O
mods	O
with	O
the	O
Quake	B-Application
engine	O
,	O
and	O
on	O
looking	O
for	O
this	O
latest	O
project	O
,	O
wanted	O
to	O
try	O
something	O
new	O
and	O
opted	O
for	O
GoldSrc	B-Application
.	O
</s>
<s>
At	O
the	O
onset	O
,	O
Valve	O
had	O
not	O
yet	O
released	O
the	O
software	B-Application
development	I-Application
kit	I-Application
(	O
SDK	O
)	O
for	O
GoldSrc	B-Application
but	O
affirmed	O
it	O
would	O
be	O
available	O
in	O
a	O
few	O
months	O
,	O
allowing	O
Le	O
to	O
work	O
on	O
the	O
character	O
models	O
in	O
the	O
interim	O
.	O
</s>
<s>
Once	O
the	O
GoldSrc	B-Application
SDK	O
was	O
available	O
,	O
Le	O
estimated	O
it	O
took	O
him	O
about	O
a	O
month	O
and	O
a	O
half	O
to	O
complete	O
the	O
programming	O
and	O
integrate	O
his	O
models	O
for	O
"	O
Beta	O
One	O
"	O
of	O
Counter-Strike	B-Application
.	O
</s>
<s>
Around	O
2000	O
at	O
the	O
time	O
of	O
Beta	O
5	O
's	O
release	O
,	O
the	O
two	O
were	O
approached	O
by	O
Valve	O
,	O
offering	O
to	O
buy	O
the	O
Counter-Strike	B-Application
intellectual	O
property	O
and	O
offering	O
both	O
jobs	O
to	O
continue	O
its	O
development	O
.	O
</s>
<s>
While	O
Cliffe	O
stayed	O
with	O
Valve	O
,	O
Le	O
did	O
some	O
additional	O
work	O
towards	O
a	O
Counter-Strike	B-Application
2.0	O
based	O
on	O
Valve	O
's	O
upcoming	O
Source	B-Application
engine	I-Application
,	O
but	O
left	O
to	O
start	O
his	O
own	O
studio	O
after	O
Valve	O
opted	O
to	O
shelve	O
the	O
sequel	O
.	O
</s>
<s>
Counter-Strike	B-Application
itself	O
is	O
a	O
mod	O
,	O
and	O
it	O
has	O
developed	O
its	O
own	O
community	O
of	O
script	O
writers	O
and	O
mod	O
creators	O
.	O
</s>
<s>
There	O
are	O
also	O
Superhero	O
mods	O
which	O
mix	O
the	O
first-person	O
gameplay	O
of	O
Counter-Strike	B-Application
with	O
an	O
experience	O
system	O
,	O
allowing	O
a	O
player	O
to	O
become	O
more	O
powerful	O
as	O
they	O
continue	O
to	O
play	O
.	O
</s>
<s>
Counter-Strike	B-Application
has	O
been	O
a	O
target	O
for	O
cheating	O
in	O
online	O
games	O
since	O
its	O
release	O
.	O
</s>
<s>
Valve	O
has	O
implemented	O
an	O
anti-cheat	O
system	O
called	O
Valve	B-Application
Anti-Cheat	I-Application
(	O
VAC	O
)	O
.	O
</s>
<s>
When	O
Counter-Strike	B-Application
was	O
published	O
by	O
Sierra	O
Studios	O
,	O
it	O
was	O
bundled	O
with	O
Team	B-Application
Fortress	I-Application
Classic	I-Application
,	O
Opposing	B-Application
Force	I-Application
multiplayer	O
,	O
and	O
the	O
Wanted	O
,	O
Half-Life	B-Application
:	O
Absolute	O
Redemption	O
and	O
Firearms	B-Application
mods	O
.	O
</s>
<s>
On	O
March	O
24	O
,	O
1999	O
,	O
Planet	O
Half-Life	B-Application
opened	O
its	O
Counter-Strike	B-Application
section	O
.	O
</s>
<s>
On	O
June	O
19	O
,	O
1999	O
,	O
the	O
first	O
public	O
beta	O
of	O
Counter-Strike	B-Application
was	O
released	O
,	O
followed	O
by	O
numerous	O
further	O
"	O
beta	O
"	O
releases	O
.	O
</s>
<s>
On	O
April	O
12	O
,	O
2000	O
,	O
Valve	O
announced	O
that	O
the	O
Counter-Strike	B-Application
developers	O
and	O
Valve	O
had	O
teamed	O
up	O
.	O
</s>
<s>
In	O
January	O
2013	O
,	O
Valve	O
began	O
testing	O
a	O
version	O
of	O
Counter-Strike	B-Application
for	O
OS	B-Operating_System
X	I-Operating_System
and	O
Linux	B-Application
,	O
eventually	O
releasing	O
the	O
update	O
to	O
all	O
users	O
in	O
April	O
2013	O
.	O
</s>
<s>
An	O
unofficial	O
browser	B-Protocol
version	O
was	O
released	O
in	O
2023	O
on	O
a	O
Russian	O
website	O
.	O
</s>
<s>
Upon	O
its	O
retail	O
release	O
,	O
Counter-Strike	B-Application
received	O
highly	O
favorable	O
reviews	O
.	O
</s>
<s>
In	O
2003	O
,	O
Counter-Strike	B-Application
was	O
inducted	O
into	O
GameSpot	O
's	O
list	O
of	O
the	O
greatest	O
games	O
of	O
all	O
time	O
.	O
</s>
<s>
The	O
New	O
York	O
Times	O
reported	O
that	O
E-Sports	O
Entertainment	O
ESEA	O
League	O
started	O
the	O
first	O
professional	O
fantasy	O
e-sports	O
league	O
in	O
2004	O
with	O
the	O
game	O
Counter-Strike	B-Application
.	O
</s>
<s>
Some	O
credit	O
the	O
move	O
into	O
professional	O
competitive	O
team	O
play	O
with	O
prizes	O
as	O
a	O
major	O
factor	O
in	O
Counter-Strike	B-Application
longevity	O
and	O
success	O
.	O
</s>
<s>
Global	O
retail	O
sales	O
of	O
Counter-Strike	B-Application
surpassed	O
250,000	O
units	O
by	O
July	O
2001	O
.	O
</s>
<s>
The	O
Xbox	B-Operating_System
version	O
sold	O
1.5	O
million	O
copies	O
in	O
total	O
.	O
</s>
<s>
On	O
January	O
17	O
,	O
2008	O
,	O
a	O
Brazilian	O
federal	O
court	O
order	O
prohibiting	O
all	O
sales	O
of	O
Counter-Strike	B-Application
and	O
EverQuest	B-Protocol
began	O
to	O
be	O
enforced	O
.	O
</s>
<s>
As	O
of	O
June	O
18	O
,	O
2009	O
,	O
a	O
regional	O
federal	O
court	O
order	O
lifting	O
the	O
prohibition	O
on	O
the	O
sale	O
of	O
Counter-Strike	B-Application
was	O
published	O
.	O
</s>
<s>
The	O
original	O
Counter-Strike	B-Application
has	O
been	O
played	O
in	O
tournaments	O
since	O
2000	O
with	O
the	O
first	O
major	O
being	O
hosted	O
in	O
2001	O
at	O
the	O
Cyberathlete	O
Professional	O
League	O
Winter	O
Championship	O
.	O
</s>
<s>
The	O
first	O
official	O
sequel	O
was	O
Counter-Strike	B-Application
:	I-Application
Source	I-Application
,	O
released	O
on	O
November	O
1	O
,	O
2004	O
.	O
</s>
<s>
The	O
game	O
was	O
criticized	O
by	O
the	O
competitive	O
community	O
,	O
who	O
believed	O
the	O
game	O
's	O
skill	O
ceiling	O
was	O
significantly	O
lower	O
than	O
that	O
of	O
CS	B-Application
1.6	I-Application
.	O
</s>
<s>
Following	O
the	O
success	O
of	O
the	O
first	O
Counter-Strike	B-Application
,	O
Valve	O
went	O
on	O
to	O
make	O
multiple	O
sequels	O
to	O
the	O
game	O
.	O
</s>
<s>
Counter-Strike	B-Application
:	I-Application
Condition	I-Application
Zero	I-Application
,	O
a	O
game	O
using	O
Counter-Strikes	B-Application
GoldSrc	B-Application
engine	I-Application
,	O
was	O
released	O
in	O
2004	O
.	O
</s>
<s>
Counter-Strike	B-Application
:	I-Application
Source	I-Application
,	O
a	O
remake	O
of	O
the	O
original	O
Counter-Strike	B-Application
,	O
was	O
the	O
first	O
in	O
the	O
series	O
to	O
use	O
Valve	O
's	O
Source	B-Application
engine	I-Application
and	O
was	O
also	O
released	O
in	O
2004	O
,	O
eight	O
months	O
after	O
the	O
release	O
of	O
Counter-Strike	B-Application
:	I-Application
Condition	I-Application
Zero	I-Application
.	O
</s>
<s>
The	O
next	O
game	O
in	O
the	O
Counter-Strike	B-Application
series	O
to	O
be	O
developed	O
primarily	O
by	O
Valve	O
was	O
Counter-Strike	B-Application
:	I-Application
Global	I-Application
Offensive	I-Application
,	O
released	O
for	O
Windows	B-Application
,	O
OS	B-Operating_System
X	I-Operating_System
,	O
Linux	B-Application
,	O
PlayStation	B-Operating_System
3	I-Operating_System
,	O
and	O
Xbox	B-Operating_System
360	I-Operating_System
in	O
2012	O
.	O
</s>
<s>
The	O
first	O
,	O
Counter-Strike	B-Application
Neo	O
,	O
was	O
an	O
arcade	O
game	O
developed	O
by	O
Namco	O
and	O
released	O
in	O
Japan	O
in	O
2003	O
.	O
</s>
<s>
In	O
2008	O
,	O
Nexon	O
Corporation	O
released	O
Counter-Strike	B-Application
Online	I-Application
,	O
a	O
free-to-play	O
instalment	O
in	O
the	O
series	O
monetized	O
via	O
microtransactions	O
.	O
</s>
<s>
Counter-Strike	B-Application
Online	I-Application
was	O
followed	O
by	O
Counter-Strike	B-Application
Online	I-Application
2	O
in	O
2013	O
.	O
</s>
<s>
In	O
2014	O
,	O
Nexon	O
released	O
Counter-Strike	B-Application
Nexon	O
:	O
Zombies	O
worldwide	O
via	O
Steam	B-Application
.	O
</s>
