<s>
Orcs	B-Application
Must	I-Application
Die	I-Application
!	I-Application
</s>
<s>
is	O
an	O
action-tower	O
defense	O
video	O
game	O
developed	O
and	O
published	O
by	O
Robot	O
Entertainment	O
and	O
Mastertronic	O
.	O
</s>
<s>
It	O
is	O
a	O
tower	B-Application
defense	I-Application
game	I-Application
that	O
eschews	O
the	O
traditional	O
top-down	O
view	O
of	O
similar	O
games	O
,	O
instead	O
using	O
a	O
third-person	O
action-oriented	O
viewpoint	O
.	O
</s>
<s>
After	O
being	O
demonstrated	O
at	O
Penny	O
Arcade	O
Expo	O
East	O
2011	O
,	O
the	O
game	O
was	O
released	O
via	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
on	O
October	O
5	O
,	O
2011	O
,	O
and	O
for	O
Windows	B-Application
PCs	I-Application
on	O
October	O
12	O
,	O
2011	O
.	O
</s>
<s>
Orcs	B-Application
Must	I-Application
Die	I-Application
!	I-Application
</s>
<s>
is	O
a	O
variant	O
of	O
a	O
tower	B-Application
defense	I-Application
game	I-Application
;	O
the	O
player	O
as	O
the	O
War	O
Mage	O
must	O
defend	O
one	O
or	O
more	O
Rifts	O
on	O
each	O
level	O
from	O
an	O
onslaught	O
of	O
orcs	B-Language
and	O
other	O
creatures	O
that	O
emerge	O
from	O
one	O
or	O
more	O
entrances	O
and	O
traverse	O
the	O
level	O
.	O
</s>
<s>
Generally	O
,	O
each	O
orc	B-Language
that	O
reaches	O
a	O
Rift	O
deducts	O
a	O
point	O
from	O
the	O
starting	O
Rift	O
Score	O
while	O
specialized	O
orcs	B-Language
may	O
take	O
off	O
more	O
points	O
;	O
if	O
the	O
Rift	O
Score	O
drops	O
to	O
zero	O
,	O
the	O
level	O
is	O
lost	O
and	O
the	O
player	O
will	O
have	O
to	O
start	O
again	O
.	O
</s>
<s>
The	O
orc	B-Language
armies	O
arrive	O
in	O
increasingly	O
more	O
difficult	O
waves	O
,	O
with	O
each	O
level	O
having	O
between	O
four	O
and	O
twelve	O
waves	O
.	O
</s>
<s>
As	O
the	O
War	O
Mage	O
,	O
the	O
player	O
has	O
the	O
ability	O
to	O
place	O
numerous	O
traps	O
and	O
arm	O
themselves	O
with	O
weapons	O
and	O
equipment	O
to	O
defeat	O
the	O
orcs	B-Language
.	O
</s>
<s>
The	O
player	O
is	O
given	O
an	O
amount	O
of	O
money	O
to	O
spend	O
on	O
trap	O
placement	O
at	O
the	O
start	O
,	O
and	O
earns	O
more	O
by	O
defeating	O
the	O
orcs	B-Language
and	O
after	O
completing	O
waves	O
;	O
money	O
can	O
also	O
be	O
dropped	O
by	O
certain	O
monsters	O
that	O
must	O
be	O
collected	O
by	O
the	O
player	O
.	O
</s>
<s>
The	O
player	O
must	O
watch	O
their	O
health	O
and	O
mana	O
used	O
for	O
their	O
weapons	O
but	O
orcs	B-Language
may	O
drop	O
health	O
and	O
mana	O
potions	O
that	O
will	O
replenish	O
these	O
;	O
alternatively	O
the	O
player	O
can	O
heal	O
while	O
in	O
proximity	O
of	O
the	O
Rift	O
.	O
</s>
<s>
Skulls	O
are	O
used	O
to	O
buy	O
improvements	O
to	O
traps	O
and	O
weapons	O
in	O
the	O
player	O
's	O
spellbook	O
,	O
such	O
as	O
increasing	O
damage	O
,	O
reducing	O
cost	O
,	O
or	O
making	O
them	O
more	O
effective	O
against	O
the	O
orcs	B-Language
.	O
</s>
<s>
In	O
order	O
to	O
protect	O
the	O
human	O
world	O
,	O
they	O
have	O
constructed	O
magic-powered	O
fortresses	O
throughout	O
the	O
Dead	O
World	O
to	O
guard	O
the	O
Rifts	O
,	O
particularly	O
from	O
the	O
adversarial	O
faction	O
known	O
as	O
'	O
the	O
Mob	O
 '	O
-	O
a	O
brutish	O
horde	O
of	O
creatures	O
such	O
as	O
Orcs	B-Language
,	O
Ogres	B-Application
and	O
Gnolls	O
which	O
,	O
despite	O
being	O
unintelligent	O
,	O
would	O
otherwise	O
pose	O
a	O
major	O
threat	O
to	O
the	O
human	O
world	O
due	O
to	O
their	O
vast	O
numbers	O
.	O
</s>
<s>
The	O
game	O
received	O
"	O
favorable	O
"	O
reviews	O
on	O
both	O
platforms	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
<s>
Joystiq	O
called	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
version	O
a	O
"	O
finely-tuned	O
whirling	O
chamber	O
of	O
death	O
"	O
.	O
</s>
<s>
It	O
sold	O
over	O
50,000	O
units	O
on	O
Xbox	B-Operating_System
and	O
substantially	O
more	O
on	O
PC	O
.	O
</s>
<s>
Orcs	B-Application
Must	I-Application
Die	I-Application
!	I-Application
</s>
<s>
Orcs	B-Application
Must	I-Application
Die	I-Application
!	I-Application
</s>
<s>
Unchained	O
,	O
the	O
third	O
game	O
in	O
the	O
series	O
,	O
initially	O
released	O
as	O
a	O
beta	O
version	O
in	O
2014	O
,	O
was	O
released	O
on	O
April	O
18	O
,	O
2017	O
for	O
the	O
Windows	B-Application
platform	O
,	O
while	O
the	O
PlayStation	O
4	O
version	O
was	O
released	O
on	O
July	O
18	O
,	O
2017	O
.	O
</s>
<s>
Orcs	B-Application
Must	I-Application
Die	I-Application
!	I-Application
</s>
<s>
3	O
was	O
announced	O
during	O
a	O
Stadia	B-Application
connect	O
on	O
August	O
19	O
,	O
2019	O
.	O
</s>
<s>
It	O
released	O
on	O
Stadia	B-Application
with	O
single-player	O
and	O
two-player	O
co-op	O
on	O
July	O
14	O
,	O
2020	O
as	O
a	O
timed	O
exclusive	O
.	O
</s>
<s>
Unlike	O
previous	O
games	O
,	O
which	O
generally	O
had	O
a	O
dungeon	O
and	O
Tower	B-Application
Defense	I-Application
design	O
with	O
limited	O
pathways	O
for	O
enemies	O
to	O
attack	O
from	O
,	O
Orcs	B-Application
Must	I-Application
Die	I-Application
!	I-Application
</s>
