<s>
Delta	B-Application
Force	I-Application
is	O
a	O
tactical	O
first-person	O
shooter	O
developed	O
and	O
published	O
by	O
NovaLogic	O
.	O
</s>
<s>
It	O
was	O
released	O
for	O
Microsoft	B-Application
Windows	I-Application
in	O
1998	O
,	O
and	O
re-released	O
on	O
Steam	B-Application
in	O
2009	O
.	O
</s>
<s>
Delta	B-Application
Force	I-Application
was	O
designed	O
to	O
be	O
a	O
military	O
simulation	O
loosely	O
based	O
on	O
the	O
United	O
States	O
 '	O
Delta	B-Application
Force	I-Application
special	O
operations	O
army	O
unit	O
.	O
</s>
<s>
The	O
player	O
assumes	O
the	O
role	O
of	O
a	O
Delta	B-Application
Force	I-Application
operator	O
who	O
takes	O
part	O
in	O
military	O
operations	O
in	O
various	O
theatres	O
,	O
and	O
may	O
customize	O
their	O
in-game	O
avatar	O
during	O
the	O
game	O
's	O
menu	O
screen	O
,	O
selecting	O
from	O
various	O
faces	O
,	O
as	O
well	O
as	O
selecting	O
a	O
male	O
or	O
female	O
operator	O
.	O
</s>
<s>
Delta	B-Application
Force	I-Application
also	O
features	O
LAN	O
and	O
online	O
multiplayer	O
for	O
up	O
to	O
32	O
players	O
.	O
</s>
<s>
All	O
missions	O
from	O
the	O
singleplayer	O
campaign	O
can	O
be	O
played	O
cooperatively	O
with	O
additional	O
players	O
replacing	O
the	O
AI-controlled	O
Delta	B-Application
Force	I-Application
operatives	O
.	O
</s>
<s>
Delta	B-Application
Force	I-Application
uses	O
NovaLogic	O
's	O
own	O
proprietary	O
Voxel	B-Application
Space	I-Application
engine	O
,	O
known	O
from	O
their	O
earlier	O
games	O
such	O
as	O
the	O
Comanche	B-Application
series	I-Application
,	O
which	O
uses	O
voxels	O
to	O
visualise	O
terrain	O
while	O
polygons	O
are	O
used	O
for	O
rendering	O
characters	O
,	O
vehicles	O
,	O
buildings	O
and	O
other	O
details	O
.	O
</s>
<s>
The	O
game	O
received	O
"	O
favorable	O
"	O
reviews	O
according	O
to	O
video	O
game	O
review	B-Application
aggregator	I-Application
GameRankings	O
.	O
</s>
<s>
He	O
also	O
drew	O
comparisons	O
to	O
Tom	O
Clancy	O
's	O
Rainbow	O
Six	O
,	O
released	O
earlier	O
the	O
same	O
year	O
,	O
but	O
noted	O
Delta	B-Application
Force	I-Application
's	O
limited	O
preparation	O
options	O
compared	O
to	O
the	O
latter	O
.	O
</s>
<s>
PC	O
Gamers	O
Todd	O
Vaughn	O
also	O
drew	O
comparisons	O
to	O
Rainbow	O
Six	O
but	O
noted	O
Delta	B-Application
Force	I-Application
's	O
focus	O
on	O
long-distance	O
fights	O
and	O
lower	O
level	O
of	O
realism	O
.	O
</s>
<s>
He	O
concluded	O
:	O
"	O
Overall	O
,	O
Delta	B-Application
Force	I-Application
is	O
a	O
surprising	O
and	O
welcome	O
addition	O
to	O
the	O
genre	O
that	O
uses	O
just	O
the	O
right	O
mix	O
 [ of ] 	O
action	O
and	O
tactics	O
to	O
set	O
itself	O
apart	O
from	O
the	O
crowd.	O
"	O
</s>
<s>
Next	O
Generation	O
wrote	O
,	O
"	O
Though	O
Delta	B-Application
Forces	I-Application
standalone	O
play	O
is	O
often	O
uninspired	O
,	O
the	O
multiplayer	O
is	O
one	O
of	O
the	O
most	O
satisfying	O
gaming	O
experiences	O
available	O
today.	O
"	O
</s>
<s>
The	O
game	O
was	O
successful	O
enough	O
to	O
receive	O
a	O
direct	O
sequel	O
,	O
Delta	B-Application
Force	I-Application
2	I-Application
,	O
the	O
following	O
year	O
and	O
spawn	O
a	O
long-running	O
series	O
.	O
</s>
<s>
The	O
last	O
game	O
in	O
the	O
series	O
was	O
Delta	B-Application
Force	I-Application
:	I-Application
Xtreme	I-Application
2	I-Application
,	O
released	O
in	O
2009	O
.	O
</s>
<s>
Another	O
game	O
titled	O
Delta	B-Application
Force	I-Application
:	O
Angel	O
Falls	O
was	O
announced	O
but	O
never	O
released	O
due	O
to	O
NovaLogic	O
's	O
closure	O
in	O
2016	O
.	O
</s>
<s>
Inspired	O
by	O
the	O
popularity	O
of	O
Ridley	O
Scott	O
's	O
war	O
film	O
Black	O
Hawk	O
Down	O
,	O
chronicling	O
the	O
Battle	O
of	O
Mogadishu	O
,	O
NovaLogic	O
developed	O
a	O
Delta	B-Application
Force	I-Application
game	O
with	O
the	O
same	O
theme	O
titled	O
Delta	B-Application
Force	I-Application
:	I-Application
Black	I-Application
Hawk	I-Application
Down	I-Application
,	O
which	O
was	O
released	O
in	O
2003	O
.	O
</s>
<s>
Due	O
to	O
the	O
rise	O
in	O
popularity	O
of	O
military-themed	O
multiplayer	O
shooters	O
with	O
vehicular	O
combat	O
,	O
most	O
notably	O
DICE	O
's	O
Battlefield	O
series	O
,	O
NovaLogic	O
also	O
developed	O
a	O
multiplayer	O
focused	O
spin-off	O
of	O
the	O
Delta	B-Application
Force	I-Application
series	O
titled	O
Joint	B-Application
Operations	I-Application
:	I-Application
Typhoon	I-Application
Rising	I-Application
,	O
released	O
in	O
2004	O
.	O
</s>
