<s>
World	B-Application
War	I-Application
Z	I-Application
is	O
a	O
third-person	O
shooter	O
video	O
game	O
developed	O
and	O
published	O
by	O
Saber	O
Interactive	O
.	O
</s>
<s>
It	O
was	O
released	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
PlayStation	B-Operating_System
4	I-Operating_System
and	O
Xbox	B-Device
One	I-Device
on	O
16	O
April	O
2019	O
,	O
and	O
a	O
Nintendo	B-Application
Switch	I-Application
version	O
was	O
released	O
on	O
2	O
November	O
2021	O
.	O
</s>
<s>
It	O
was	O
also	O
released	O
for	O
Google	B-Application
Stadia	I-Application
on	O
5	O
April	O
2022	O
.	O
</s>
<s>
Ports	O
for	O
PlayStation	B-Device
5	I-Device
and	O
Xbox	B-Device
Series	I-Device
X/S	I-Device
released	O
on	O
24	O
January	O
2023	O
.	O
</s>
<s>
Loosely	O
based	O
on	O
the	O
2006	B-Application
novel	I-Application
of	B-Application
the	I-Application
same	I-Application
name	I-Application
and	O
set	O
in	O
the	O
same	O
universe	O
as	O
the	O
2013	O
film	O
adaptation	O
,	O
the	O
game	O
follows	O
groups	O
of	O
four	O
survivors	O
of	O
a	O
zombie	B-Application
apocalypse	O
in	O
the	O
cities	O
of	O
New	O
York	O
,	O
Jerusalem	B-Application
,	O
Moscow	O
,	O
Tokyo	O
,	O
Marseille	O
,	O
Rome	O
and	O
Kamchatka	O
.	O
</s>
<s>
The	O
game	O
is	O
a	O
co-operative	O
third-person	O
shooter	O
in	O
which	O
four	O
players	O
fight	O
against	O
massive	O
hordes	O
of	O
zombies	B-Application
in	O
seven	O
locations	O
,	O
including	O
New	O
York	O
,	O
Jerusalem	B-Application
,	O
Moscow	O
,	O
Tokyo	O
,	O
Marseille	O
,	O
Rome	O
and	O
Kamchatka	O
.	O
</s>
<s>
In	O
addition	O
to	O
fighting	O
zombies	B-Application
,	O
players	O
also	O
need	O
to	O
complete	O
different	O
objectives	O
,	O
such	O
as	O
escorting	O
survivors	O
,	O
in	O
each	O
location	O
.	O
</s>
<s>
The	O
Player	O
vs	O
Player	O
vs	O
Zombie	B-Application
mode	O
pits	O
two	O
teams	O
of	O
players	O
against	O
each	O
other	O
while	O
the	O
zombie	B-Application
hordes	O
attack	O
both	O
teams	O
.	O
</s>
<s>
The	O
group	O
manages	O
to	O
reach	O
the	O
train	O
and	O
help	O
prepare	O
it	O
for	O
departure	O
while	O
fighting	O
off	O
swarms	O
of	O
zombies	B-Application
trying	O
to	O
overrun	O
them	O
.	O
</s>
<s>
Finding	O
a	O
boat	O
attached	O
to	O
a	O
winch	O
,	O
the	O
group	O
desperately	O
tries	O
to	O
bring	O
it	O
ashore	O
as	O
their	O
last	O
chance	O
of	O
escape	O
while	O
fighting	O
off	O
a	O
massive	O
zombie	B-Application
horde	O
.	O
</s>
<s>
Somewhere	O
along	O
the	O
way	O
,	O
however	O
,	O
the	O
boat	O
runs	O
out	O
of	O
fuel	O
and	O
the	O
survivors	O
are	O
once	O
again	O
left	O
stranded	O
in	O
a	O
zombie-infested	O
town	O
.	O
</s>
<s>
A	O
group	O
of	O
IDF	O
soldiers	O
and	O
a	O
photojournalist	O
are	O
tasked	O
with	O
rescuing	O
a	O
scientist	O
whom	O
high	O
command	O
regards	O
as	O
crucial	O
in	O
putting	O
an	O
end	O
to	O
the	O
zombie	B-Application
epidemic	O
.	O
</s>
<s>
The	O
group	O
manages	O
to	O
rescue	O
the	O
scientist	O
,	O
who	O
reveals	O
that	O
he	O
was	O
part	O
of	O
a	O
team	O
developing	O
an	O
experimental	O
orbital	O
particle	O
cannon	O
that	O
can	O
be	O
used	O
to	O
wipe	O
out	O
large	O
swarms	O
of	O
zombies	B-Application
in	O
a	O
single	O
shot	O
.	O
</s>
<s>
While	O
flying	O
away	O
from	O
the	O
facility	O
,	O
the	O
group	O
witnesses	O
the	O
devastating	O
firepower	O
of	O
the	O
cannon	O
,	O
which	O
wipes	O
out	O
a	O
large	O
zombie	B-Application
swarm	O
which	O
overruns	O
the	O
facility	O
.	O
</s>
<s>
After	O
fending	O
off	O
the	O
zombies	B-Application
,	O
the	O
officer	O
enlists	O
the	O
group	O
's	O
help	O
in	O
activating	O
a	O
deadly	O
nerve	O
agent	O
throughout	O
Moscow	O
that	O
is	O
lethal	O
to	O
both	O
humans	O
and	O
zombies	B-Application
.	O
</s>
<s>
The	O
plan	O
is	O
to	O
evacuate	O
any	O
survivors	O
in	O
the	O
city	O
and	O
kill	O
all	O
of	O
the	O
zombies	B-Application
,	O
but	O
the	O
nerve	O
agent	O
will	O
leave	O
Moscow	O
uninhabitable	O
for	O
six	O
months	O
.	O
</s>
<s>
They	O
successfully	O
release	O
it	O
throughout	O
Moscow	O
,	O
killing	O
all	O
of	O
the	O
zombies	B-Application
in	O
the	O
city	O
.	O
</s>
<s>
Five	O
days	O
after	O
being	O
stranded	O
in	O
the	O
bunker	O
,	O
the	O
group	O
believes	O
they	O
have	O
been	O
abandoned	O
,	O
but	O
re-establish	O
a	O
connection	O
with	O
the	O
officer	O
who	O
tells	O
them	O
to	O
gas	O
the	O
tunnels	O
to	O
kill	O
off	O
the	O
zombies	B-Application
hiding	O
inside	O
.	O
</s>
<s>
Soon	O
after	O
,	O
the	O
Russian	O
Army	O
arrives	O
and	O
evacuates	O
the	O
group	O
from	O
the	O
station	O
as	O
it	O
is	O
being	O
attacked	O
by	O
multiple	O
zombie	B-Application
hordes	O
.	O
</s>
<s>
With	O
one	O
of	O
the	O
largest	O
zombie	B-Application
hordes	O
in	O
Europe	O
headed	O
straight	O
for	O
Marseille	O
,	O
four	O
members	O
of	O
the	O
French	O
Resistance	O
battle	O
their	O
way	O
through	O
the	O
streets	O
to	O
obtain	O
weapons	O
and	O
medicine	O
before	O
it	O
arrives	O
.	O
</s>
<s>
There	O
,	O
they	O
find	O
survivors	O
holed	O
up	O
in	O
a	O
fortified	O
building	O
,	O
and	O
a	O
giant	O
swarm	O
of	O
zombies	B-Application
climbing	O
up	O
the	O
hill	O
toward	O
their	O
position	O
.	O
</s>
<s>
The	O
studio	O
decided	O
to	O
use	O
the	O
World	B-Application
War	I-Application
Z	I-Application
license	O
for	O
the	O
game	O
as	O
they	O
felt	O
that	O
there	O
were	O
too	O
many	O
risks	O
involved	O
in	O
marketing	O
a	O
brand	O
new	O
intellectual	O
property	O
.	O
</s>
<s>
Matt	O
Karch	O
,	O
CEO	O
of	O
Saber	O
Interactive	O
,	O
described	O
the	O
game	O
as	O
the	O
combination	O
of	O
both	O
the	O
2013	O
film	O
and	O
the	O
2006	B-Application
novel	I-Application
.	O
</s>
<s>
The	O
team	O
took	O
inspiration	O
from	O
The	B-Application
Chronicles	I-Application
of	I-Application
Riddick	I-Application
:	I-Application
Escape	I-Application
from	I-Application
Butcher	I-Application
Bay	I-Application
when	O
they	O
were	O
exploring	O
how	O
they	O
could	O
incorporate	O
elements	O
from	O
the	O
film	O
and	O
the	O
book	O
into	O
the	O
game	O
.	O
</s>
<s>
Left	B-Application
4	I-Application
Dead	I-Application
also	O
inspired	O
the	O
developer	O
when	O
they	O
were	O
crafting	O
the	O
game	O
's	O
gameplay	O
.	O
</s>
<s>
A	O
proprietary	O
game	O
engine	O
named	O
the	O
Swarm	O
Engine	O
was	O
used	O
to	O
power	O
the	O
game	O
and	O
render	O
the	O
huge	O
zombie	B-Application
hordes	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
on	O
19	O
April	O
2019	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
PlayStation	B-Operating_System
4	I-Operating_System
and	O
Xbox	B-Device
One	I-Device
.	O
</s>
<s>
Alongside	O
the	O
reveal	O
of	O
the	O
Game	O
of	O
the	O
Year	O
Edition	O
,	O
a	O
Nintendo	B-Application
Switch	I-Application
port	O
was	O
announced	O
.	O
</s>
<s>
Game	O
Informer	O
compared	O
it	O
to	O
Left	B-Application
4	I-Application
Dead	I-Application
series	O
and	O
praised	O
its	O
shooting	O
mechanics	O
,	O
visuals	O
and	O
story	O
,	O
but	O
criticized	O
its	O
soundtrack	O
and	O
lack	O
of	O
non-vocal	O
player	O
interactions	O
.	O
</s>
<s>
In	O
Japan	O
,	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
version	O
of	O
World	B-Application
War	I-Application
Z	I-Application
sold	O
27,872	O
copies	O
within	O
its	O
first	O
week	O
of	O
release	O
in	O
September	O
2019	O
,	O
placing	O
it	O
at	O
number	O
seven	O
on	O
the	O
all	O
format	O
video	O
game	O
sales	O
chart	O
.	O
</s>
