<s>
Zhengtu	B-Protocol
Online	I-Protocol
(	O
)	O
was	O
a	O
MMORPG	B-Protocol
developed	O
and	O
run	O
by	O
Shanghai	B-Device
based	O
Zhengtu	B-Protocol
Network	O
.	O
</s>
<s>
In	O
2008	O
it	O
reached	O
1.52	O
million	O
peak	O
concurrent	O
users	O
,	O
becoming	O
the	O
second	O
most	O
popular	O
online	O
game	O
,	O
after	O
Fantasy	B-Protocol
Westward	I-Protocol
Journey	I-Protocol
with	O
1.66	O
million	O
peak	O
concurrent	O
users	O
.	O
</s>
<s>
Zhengtu	B-Protocol
ceased	O
operations	O
on	O
26	O
December	O
2018	O
.	O
</s>
<s>
It	O
featured	O
the	O
now-canonical	O
lock-and-key	O
system	O
made	O
famous	O
by	O
Counter-Strike	B-Application
,	O
but	O
would	O
also	O
show	O
you	O
all	O
the	O
loot	O
that	O
a	O
chest	O
could	O
contain	O
on	O
a	O
circle	O
reminiscent	O
of	O
Wheel	O
of	O
Fortune	O
.	O
</s>
