<s>
,	O
known	O
as	O
Deadly	O
Skies	O
in	O
Europe	O
,	O
is	O
a	O
combat	O
flight	O
simulation	O
game	O
released	O
in	O
1999	O
for	O
the	B-Operating_System
Dreamcast	I-Operating_System
and	O
the	O
first	O
in	O
the	O
Airforce	B-Application
Delta	I-Application
series	O
.	O
</s>
<s>
The	O
game	O
is	O
a	O
3D	O
aerial	O
combat	O
simulation	O
,	O
featuring	O
many	O
jet	B-Application
fighter	I-Application
aircraft	O
.	O
</s>
<s>
The	O
game	O
is	O
single	O
player	O
only	O
and	O
has	O
been	O
compared	O
to	O
Ace	B-Application
Combat	I-Application
by	O
GameSpy	O
and	O
GameSpot	O
.	O
</s>
<s>
At	O
the	O
time	O
of	O
the	O
game	O
's	O
release	O
,	O
Airforce	B-Application
Delta	I-Application
was	O
the	O
only	O
combat	O
flight	O
simulation	O
game	O
available	O
for	O
the	B-Operating_System
Dreamcast	I-Operating_System
.	O
</s>
<s>
A	O
Game	B-Device
Boy	I-Device
Color	I-Device
version	O
of	O
Airforce	B-Application
Delta	I-Application
was	O
also	O
released	O
in	O
2000	O
.	O
</s>
<s>
Airforce	B-Application
Delta	I-Application
features	O
simplistic	O
controls	O
with	O
an	O
emphasis	O
on	O
arcade-style	O
action	O
rather	O
than	O
accurate	O
flight	O
simulation	O
.	O
</s>
<s>
The	O
enemies	O
encountered	O
in	O
Airforce	B-Application
Delta	I-Application
are	O
diverse	O
and	O
range	O
from	O
air	O
to	O
ground	O
and	O
water	O
capabilities	O
and	O
from	O
offensive	O
to	O
defensive	O
situations	O
.	O
</s>
<s>
Airforce	B-Application
Delta	I-Application
features	O
over	O
thirty	O
aircraft	O
to	O
take	O
for	O
a	O
test	O
flight	O
.	O
</s>
<s>
Some	O
of	O
the	O
planes	O
available	O
for	O
these	O
missions	O
include	O
the	O
F-4	O
Phantom	O
,	O
F-14	B-Device
Tomcat	I-Device
,	O
A-10	O
Thunderbolt	O
,	O
Mig	O
29	O
,	O
Su-27	O
and	O
the	O
F-22	B-Application
Raptor	I-Application
.	O
</s>
<s>
After	O
years	O
of	O
civil	O
war	O
,	O
Laconia	O
is	O
the	O
only	O
republic	O
left	O
standing	O
and	O
has	O
asked	O
a	O
mercenary	O
defense	O
organization	O
,	O
Airforce	B-Application
Delta	I-Application
,	O
to	O
help	O
keep	O
it	O
from	O
falling	O
to	O
the	O
dreaded	O
unification	O
movement	O
.	O
</s>
<s>
The	B-Operating_System
Dreamcast	I-Operating_System
version	O
of	O
the	O
game	O
received	O
average	O
reviews	O
,	O
while	O
the	O
Game	B-Device
Boy	I-Device
Color	I-Device
version	O
received	O
unfavorable	O
reviews	O
,	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
GameRankings	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Famitsu	O
gave	O
the	B-Operating_System
Dreamcast	I-Operating_System
version	O
a	O
score	O
of	O
31	O
out	O
of	O
40	O
.	O
</s>
