<s>
Worms	B-Application
:	I-Application
Open	I-Application
Warfare	I-Application
is	O
a	O
2D	O
artillery	B-Application
tactical	B-Application
game	I-Application
.	O
</s>
<s>
It	O
was	O
developed	O
by	O
Team17	O
and	O
published	O
by	O
THQ	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
and	O
Nintendo	B-Device
DS	I-Device
.	O
</s>
<s>
It	O
is	O
the	O
first	O
game	O
in	O
the	O
Worms	B-Application
series	I-Application
to	O
be	O
released	O
for	O
seventh	B-Application
generation	I-Application
handheld	O
consoles	O
and	O
marked	O
the	O
series	O
 '	O
return	O
to	O
its	O
original	O
2D	O
gameplay	O
style	O
.	O
</s>
<s>
In	O
Open	O
Warfare	O
,	O
the	O
player	O
takes	O
control	O
of	O
an	O
army	O
of	O
worms	B-Application
.	O
</s>
<s>
The	O
goal	O
of	O
the	O
game	O
is	O
to	O
defeat	O
the	O
opposing	O
army	O
through	O
reducing	O
the	O
health	O
points	O
of	O
enemy	O
worms	B-Application
using	O
various	O
types	O
of	O
weaponry	O
while	O
avoiding	O
friendly	O
fire	O
and	O
other	O
obstacles	O
.	O
</s>
<s>
The	O
weapons	O
and	O
gadgets	O
the	O
players	O
use	O
in	O
battle	O
include	O
grenades	O
,	O
homing	O
missiles	O
,	O
bazookas	O
,	O
cluster	O
bombs	O
,	O
banana	O
bombs	O
(	O
a	O
Worms	B-Application
staple	O
)	O
,	O
dynamite	O
,	O
air	O
strikes	O
,	O
shotguns	O
,	O
and	O
many	O
more	O
.	O
</s>
<s>
Each	O
team	O
takes	O
turns	O
controlling	O
one	O
of	O
their	O
worms	B-Application
.	O
</s>
<s>
The	O
player	O
is	O
usually	O
allocated	O
60	O
seconds	O
per	O
turn	O
to	O
move	O
their	O
worm	O
around	O
the	O
battlefield	O
and	O
attack	O
the	O
opponent	O
worms	B-Application
,	O
though	O
this	O
time	O
limit	O
is	O
customisable	O
when	O
playing	O
non-career	O
games	O
.	O
</s>
<s>
Worms	B-Application
:	I-Application
Open	I-Application
Warfare	I-Application
received	O
generally	O
mixed	O
to	O
positive	O
reviews	O
from	O
critics	O
.	O
</s>
<s>
Aggregate	O
review	O
websites	O
GameRankings	O
and	O
Metacritic	O
gave	O
the	O
PSP	B-Operating_System
version	O
71.29	O
%	O
based	O
on	O
21	O
reviews	O
and	O
70/100	O
based	O
on	O
22	O
reviews	O
and	O
the	O
DS	B-Device
version	O
63.60	O
%	O
based	O
on	O
25	O
reviews	O
and	O
64/100	O
based	O
on	O
24	O
reviews	O
.	O
</s>
<s>
GamesRadar	O
praised	O
the	O
graphics	O
and	O
the	O
local	O
multiplayer	O
mode	O
,	O
but	O
criticised	O
the	O
omission	O
of	O
online	O
multiplayer	O
and	O
the	B-Application
artificial	I-Application
intelligence	I-Application
.	O
</s>
<s>
The	O
original	O
game	O
spawned	O
a	O
direct	O
sequel	O
,	O
Worms	B-Device
:	I-Device
Open	I-Device
Warfare	I-Device
2	I-Device
,	O
in	O
2007	O
.	O
</s>
<s>
A	O
console	B-Application
port	I-Application
of	O
Open	O
Warfare	O
was	O
also	O
released	O
on	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
in	O
the	O
same	O
year	O
.	O
</s>
<s>
The	O
console	O
version	O
would	O
spawn	O
its	O
own	O
2009	O
sequel	O
,	O
Worms	B-Application
2	I-Application
:	I-Application
Armageddon	I-Application
,	O
which	O
in-turn	O
was	O
ported	O
to	O
PCs	O
as	O
Worms	B-Application
Reloaded	I-Application
in	O
2010	O
.	O
</s>
