<s>
Call	B-Application
of	I-Application
Duty	I-Application
Online	I-Application
(	O
also	O
known	O
as	O
CODOL	O
,	O
CODO	O
,	O
and	O
Call	B-Application
of	I-Application
Duty	I-Application
:	O
Online	O
,	O
)	O
was	O
a	O
free	O
,	O
online	O
first-person	O
shooter	O
video	O
game	O
developed	O
by	O
Activision	O
Shanghai	O
and	O
Raven	O
Software	O
.	O
</s>
<s>
It	O
was	O
a	O
free-to-play	O
game	O
,	O
making	O
it	O
the	O
first	O
such	O
title	O
in	O
the	O
Call	B-Application
of	I-Application
Duty	I-Application
series	O
.	O
</s>
<s>
On	O
May	O
31	O
,	O
2021	O
,	O
Tencent	O
Games	O
announced	O
the	O
game	O
servers	O
would	O
be	O
shut	O
down	O
on	O
August	O
31	O
,	O
2021	O
and	O
promoted	O
players	O
to	O
instead	O
shift	O
to	O
Call	B-Application
of	I-Application
Duty	I-Application
:	I-Application
Mobile	I-Application
.	O
</s>
<s>
Following	O
the	O
launch	O
of	O
Call	B-Application
of	I-Application
Duty	I-Application
:	I-Application
Modern	I-Application
Warfare	I-Application
2	I-Application
,	O
Activision	O
began	O
attempts	O
to	O
sell	O
a	O
Call	B-Application
of	I-Application
Duty	I-Application
game	O
in	O
the	O
Chinese	O
market	O
but	O
struggled	O
with	O
the	O
cost	O
and	O
Chinese	O
distribution	O
laws	O
.	O
</s>
<s>
After	O
its	O
launch	O
,	O
the	O
game	O
released	O
updates	O
that	O
included	O
new	B-Application
weapons	I-Application
and	O
features	O
from	O
recent	O
installments	O
in	O
the	O
larger	O
franchise	O
.	O
</s>
