<s>
Twin	B-Application
Hawk	I-Application
is	O
a	O
1989	B-Application
vertically	O
scrolling	O
shooter	O
arcade	O
video	O
game	O
originally	O
developed	O
by	O
Toaplan	O
and	O
published	O
by	O
Taito	O
.	O
</s>
<s>
Created	O
by	O
Yuichirō	O
Nozawa	O
,	O
Twin	B-Application
Hawk	I-Application
was	O
developed	O
as	O
a	O
commission	O
for	O
Taito	O
by	O
most	O
of	O
the	O
same	O
team	O
that	O
previously	O
worked	O
on	O
several	O
projects	O
at	O
Toaplan	O
and	O
made	O
use	O
of	O
the	O
former	O
's	O
Taito	O
X	O
System	O
board	O
.	O
</s>
<s>
Though	O
it	O
was	O
initially	O
launched	O
for	O
the	O
arcades	O
,	O
the	O
game	O
was	O
later	O
ported	O
to	O
consoles	O
including	O
the	O
Sega	B-Operating_System
Mega	I-Operating_System
Drive	I-Operating_System
,	O
PC	B-General_Concept
Engine	I-General_Concept
and	O
PC	B-General_Concept
Engine	I-General_Concept
CD-ROM²	O
,	O
with	O
each	O
one	O
featuring	O
several	O
changes	O
and	O
additions	O
compared	O
to	O
the	O
original	O
version	O
.	O
</s>
<s>
Twin	B-Application
Hawk	I-Application
is	O
a	O
military-themed	O
vertically	O
scrolling	O
shoot	O
'	O
em	O
up	O
game	O
reminiscent	O
of	O
Flying	B-Application
Shark	I-Application
,	O
in	O
which	O
players	O
assume	O
the	O
role	O
of	O
a	O
wing	O
commander	O
from	O
the	O
Daisenpū	O
squadron	O
taking	O
control	O
of	O
a	O
Flying	O
Fortress	O
fighter	O
aircraft	O
through	O
multiple	O
levels	O
to	O
defeat	O
an	O
assortment	O
of	O
military	O
enemy	O
forces	O
like	O
tanks	O
,	O
battleships	B-Application
,	O
and	O
artillery	B-Application
to	O
overthrow	O
general	O
Giovanni	O
and	O
his	O
army	O
as	O
the	O
main	O
objective	O
.	O
</s>
<s>
Like	O
Tiger-Heli	B-Application
,	O
there	O
are	O
no	O
flying	O
enemies	O
in	O
the	O
game	O
.	O
</s>
<s>
Common	O
to	O
Toaplan	O
arcade	O
titles	O
,	O
there	O
are	O
various	O
differences	O
between	O
the	O
Japanese	O
and	O
western	O
versions	O
,	O
such	O
as	O
Twin	B-Application
Hawk	I-Application
versions	O
containing	O
co-operative	O
play	O
.	O
</s>
<s>
A	O
unique	O
gameplay	O
feature	O
is	O
the	O
bomb	B-Device
mechanic	O
in	O
the	O
form	O
of	O
a	O
group	O
of	O
friendly	O
planes	O
;	O
pressing	O
the	O
bomb	B-Device
button	O
will	O
call	O
in	O
six	O
Flying	O
Fortresses	O
to	O
surround	O
and	O
protect	O
the	O
player	O
's	O
plane	O
and	O
provide	O
back-up	O
fire	O
.	O
</s>
<s>
After	O
taking	O
enemy	O
fire	O
,	O
the	O
friendly	O
planes	O
perform	O
a	O
kamikaze	B-Application
attack	O
against	O
nearest	O
enemies	O
below	O
but	O
players	O
can	O
also	O
lead	O
them	O
to	O
perform	O
kamikaze	B-Application
as	O
well	O
by	O
pressing	O
the	O
bomb	B-Device
button	O
once	O
all	O
planes	O
are	O
already	O
in	O
formation	O
.	O
</s>
<s>
Double	O
tapping	O
the	O
bomb	B-Device
button	O
activates	O
a	O
bomb	B-Device
capable	O
of	O
obliterating	O
any	O
enemy	O
caught	O
within	O
its	O
blast	B-Device
radius	I-Device
.	O
</s>
<s>
There	O
are	O
also	O
various	O
types	O
of	O
items	O
scattered	O
through	O
every	O
level	O
:	O
"	O
P	O
"	O
icons	O
to	O
upgrade	O
the	O
player	O
's	O
main	O
gun	O
,	O
extra	O
helper/bomb	O
stocks	O
and	O
1UPs	O
.	O
</s>
<s>
Getting	O
hit	O
by	O
enemy	O
fire	O
results	O
in	O
losing	O
a	O
live	O
,	O
as	O
well	O
as	O
a	O
penalty	O
of	O
decreasing	O
the	O
ship	O
's	O
firepower	O
and	O
once	O
all	O
lives	O
are	O
lost	O
,	O
the	O
game	B-Application
is	I-Application
over	I-Application
unless	O
the	O
players	O
insert	O
more	O
credits	O
into	O
the	O
arcade	O
machine	O
to	O
continue	O
playing	O
.	O
</s>
<s>
The	O
game	O
loops	O
back	O
to	O
the	O
first	O
level	O
after	O
completing	O
the	O
last	O
one	O
as	O
with	O
previous	O
titles	O
from	O
Toaplan	O
,	O
with	O
each	O
one	O
increasing	O
the	O
difficulty	O
and	O
enemies	O
fire	O
denser	O
bullet	B-Application
patterns	O
.	O
</s>
<s>
The	O
plot	O
summary	O
of	O
Twin	B-Application
Hawk	I-Application
varies	O
between	O
each	O
region	O
and	O
version	O
.	O
</s>
<s>
Twin	B-Application
Hawk	I-Application
was	O
created	O
as	O
a	O
commission	O
for	O
Taito	O
by	O
most	O
of	O
the	O
same	O
team	O
that	O
worked	O
on	O
previous	O
projects	O
at	O
Toaplan	O
and	O
made	O
use	O
of	O
the	O
former	O
's	O
Taito	O
X	O
System	O
board	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
by	O
Taito	O
in	O
Japanese	O
and	O
European	O
arcades	O
on	O
June	O
1989	B-Application
.	O
</s>
<s>
It	O
was	O
also	O
featured	O
on	O
a	O
Japanese	O
TV	O
show	O
,	O
with	O
Pokémon	B-Application
creator	O
Satoshi	O
Tajiri	O
reviewing	O
the	O
arcade	O
version	O
.	O
</s>
<s>
Twin	B-Application
Hawk	I-Application
was	O
ported	O
a	O
year	O
later	O
in-house	O
by	O
the	O
same	O
staff	O
from	O
the	O
original	O
arcade	O
release	O
to	O
the	O
Sega	B-Operating_System
Mega	I-Operating_System
Drive	I-Operating_System
in	O
Japan	O
on	O
23	O
June	O
,	O
1990	B-Application
,	O
and	O
in	O
Europe	O
on	O
25	O
July	O
of	O
the	O
same	O
year	O
.	O
</s>
<s>
The	O
Mega	B-Operating_System
Drive	I-Operating_System
port	O
stays	O
faithful	O
to	O
the	O
original	O
arcade	O
release	O
but	O
has	O
a	O
number	O
of	O
key	O
differences	O
such	O
as	O
having	O
a	O
smaller	O
color	O
palette	O
that	O
lead	O
to	O
sprites	O
being	O
recolored	O
in	O
different	O
ways	O
,	O
along	O
with	O
other	O
presentation	O
and	O
gameplay	O
changes	O
from	O
the	O
original	O
version	O
.	O
</s>
<s>
Tataka	O
stated	O
that	O
working	O
with	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
proved	O
to	O
be	O
difficult	O
due	O
to	O
several	O
restrictions	O
imposed	O
by	O
the	O
hardware	O
.	O
</s>
<s>
Twin	B-Application
Hawk	I-Application
was	O
later	O
ported	O
by	O
Center	O
Tech	O
and	O
published	O
by	O
NEC	O
Avenue	O
to	O
the	O
PC	B-General_Concept
Engine	I-General_Concept
exclusively	O
in	O
Japan	O
on	O
14	O
December	O
of	O
the	O
same	O
year	O
after	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
version	O
.	O
</s>
<s>
On	O
26	O
July	O
1991	O
,	O
an	O
enhanced	O
re-issue	O
of	O
the	O
PC	B-General_Concept
Engine	I-General_Concept
version	O
for	O
the	O
PC	B-General_Concept
Engine	I-General_Concept
CD-ROM²	O
titled	O
Daisenpu	O
Custom	O
was	O
released	O
,	O
which	O
is	O
similar	O
to	O
the	O
previous	O
PC	B-General_Concept
Engine	I-General_Concept
version	O
with	O
the	O
added	O
benefit	O
of	O
arranged	O
CD-DA	O
soundtrack	O
and	O
additional	O
stages	O
and	O
enemies	O
.	O
</s>
<s>
Reception	O
Review	O
scores	O
Publication	O
Scores	O
ARC	O
SMD	B-Operating_System
PCE	B-General_Concept
PCE	B-General_Concept
CD-ROM²	O
ACE	O
715	O
/	O
1000	O
ASM	O
6	O
/	O
12	O
Beep	O
!	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
Twin	B-Application
Hawk	I-Application
on	O
their	O
August	O
1	O
,	O
1989	B-Application
issue	O
as	O
being	O
the	O
seventh	O
most-successful	O
table	O
arcade	O
unit	O
of	O
the	O
month	O
,	O
outperforming	O
titles	O
such	O
as	O
Flipull	B-Application
and	O
Golden	B-Application
Axe	I-Application
.	O
</s>
<s>
On	O
release	O
,	O
Famitsu	O
scored	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
version	O
of	O
the	O
game	O
a	O
30	O
out	O
of	O
40	O
.	O
</s>
