<s>
It	O
was	O
one	O
of	O
the	O
launch	O
titles	O
for	O
both	O
the	O
Neo	B-Application
Geo	I-Application
MVS	I-Application
(	O
arcade	O
)	O
and	O
Neo	B-Application
Geo	I-Application
AES	I-Application
(	O
home	O
)	O
platforms	O
,	O
in	O
addition	O
to	O
being	O
the	O
only	O
title	O
in	O
the	O
system	O
that	O
does	O
not	O
feature	O
the	O
Neo	B-Operating_System
Geo	I-Operating_System
boot	B-Operating_System
screen	I-Operating_System
in	O
its	O
attract	O
mode	O
,	O
as	O
well	O
as	O
one	O
of	O
the	O
pack-in	O
games	O
for	O
the	O
AES	O
.	O
</s>
<s>
Initially	O
launched	O
for	O
the	O
Neo	B-Application
Geo	I-Application
MVS	I-Application
,	O
NAM-1975	B-Application
was	O
later	O
released	O
for	O
both	O
Neo	B-Application
Geo	I-Application
AES	I-Application
and	O
Neo	B-Device
Geo	I-Device
CD	I-Device
in	O
1991	O
and	O
1994	O
respectively	O
,	O
and	O
has	O
since	O
been	O
re-released	O
through	O
download	O
services	O
for	O
various	O
consoles	O
,	O
among	O
other	O
ways	O
to	O
play	O
it	O
.	O
</s>
<s>
NAM-1975	B-Application
received	O
positive	O
reception	O
from	O
critics	O
upon	O
its	O
release	O
,	O
with	O
praise	O
given	O
to	O
the	O
graphics	O
and	O
digitized	O
voice	O
samples	O
but	O
many	O
were	O
divided	O
in	O
regards	O
to	O
the	O
gameplay	O
,	O
while	O
it	O
received	O
criticism	O
for	O
the	O
music	O
and	O
difficulty	O
.	O
</s>
<s>
NAM-1975	B-Application
is	O
a	O
shooting	O
gallery	O
game	O
similar	O
to	O
Cabal	B-Application
and	O
Dynamite	B-Application
Duke	I-Application
where	O
players	O
take	O
control	O
of	O
the	O
soldiers	O
Silver	O
(	O
P1	O
)	O
and	O
Brown	O
(	O
P2	O
)	O
,	O
across	O
six	O
stages	O
that	O
take	O
place	O
on	O
Vietnam	O
during	O
the	O
final	O
months	O
of	O
the	O
Vietnam	O
War	O
and	O
defeat	O
the	O
bosses	O
of	O
each	O
level	O
in	O
order	O
to	O
progress	O
through	O
the	O
game	O
.	O
</s>
<s>
The	O
joystick	B-Device
moves	O
both	O
the	O
soldier	O
and	O
the	O
crosshair	O
left	O
and	O
right	O
of	O
the	O
area	O
.	O
</s>
<s>
If	O
the	O
joystick	B-Device
is	O
pulled	O
diagonally	O
when	O
running	O
,	O
the	O
soldiers	O
will	O
perform	O
an	O
evasive	O
roll	O
that	O
prevents	O
them	O
from	O
being	O
killed	O
,	O
in	O
addition	O
of	O
dodging	O
enemy	O
fire	O
as	O
well	O
.	O
</s>
<s>
Once	O
all	O
lives	O
are	O
lost	O
,	O
the	O
game	B-Application
is	I-Application
over	I-Application
unless	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
guns	O
that	O
can	O
be	O
picked	O
up	O
during	O
gameplay	O
consists	O
of	O
the	O
Balcan	O
(	O
A	O
more	O
powerful	O
machine	O
gun	O
)	O
,	O
a	O
flamethrower	O
capable	O
of	O
only	O
taking	O
out	O
ground	O
units	O
and	O
a	O
missile	O
launcher	O
,	O
while	O
the	O
other	O
grenade-type	O
weapons	O
that	O
can	O
be	O
collected	O
are	O
the	O
spark	O
and	O
napalm	O
bombs	B-Device
.	O
</s>
<s>
If	O
the	O
players	O
save	O
a	O
female	O
hostage	B-Device
from	O
the	O
enemy	O
,	O
the	O
hostage	B-Device
(	O
named	O
Chris	O
)	O
will	O
help	O
players	O
by	O
shooting	O
at	O
enemies	O
,	O
until	O
the	O
player	O
who	O
rescued	O
her	O
is	O
killed	O
or	O
reaches	O
the	O
end	O
of	O
the	O
area	O
.	O
</s>
<s>
We	O
will	O
never	O
forget	O
the	O
nightmare	O
of	O
that	O
summer	O
...	O
"	O
these	O
were	O
the	O
phrases	O
that	O
started	O
the	O
story	O
of	O
Silver	O
and	O
Brown	O
,	O
two	O
soldiers	O
who	O
were	O
recalled	O
back	O
to	O
the	O
Natorm	O
headquarters	O
in	O
the	O
summer	O
of	O
1975	O
,	O
during	O
the	O
final	O
months	O
of	O
the	O
Vietnam	O
War	O
,	O
in	O
order	O
to	O
rescue	O
the	O
ex-U.S.	O
army	O
scientist	O
Dr.	O
R	O
.	O
Muckly	O
,	O
who	O
was	O
kidnapped	O
and	O
presumably	O
imprisoned	O
in	O
the	O
interior	O
of	O
Vietnam	O
by	O
North	O
Side	O
terrorists	O
,	O
as	O
part	O
of	O
an	O
organized	O
special	B-Application
forces	I-Application
unit	O
.	O
</s>
<s>
After	O
capturing	O
an	O
enemy	O
commander	O
,	O
the	O
soldiers	O
proceed	O
to	O
interrogate	O
him	O
about	O
how	O
their	O
plan	O
was	O
quickly	O
found	O
out	O
but	O
the	O
commander	O
is	O
then	O
killed	O
by	O
a	O
sniper	B-Protocol
,	O
but	O
not	O
before	O
informing	O
the	O
armies	O
that	O
Dr.	O
R	O
.	O
Muckly	O
is	O
a	O
madman	O
who	O
is	O
constructing	O
a	O
gigantic	O
laser	O
cannon	O
to	O
take	O
over	O
the	O
world	O
himself	O
.	O
</s>
<s>
Despite	O
the	O
intense	O
firepower	O
of	O
the	O
weapon	O
,	O
the	O
troops	O
defeat	O
Dr.	O
R	O
.	O
Muckly	O
and	O
save	O
the	O
world	O
,	O
with	O
the	O
special	B-Application
forces	I-Application
now	O
being	O
regarded	O
as	O
heroes	O
but	O
the	O
war	O
continues	O
in	O
Vietnam	O
.	O
</s>
<s>
NAM-1975	B-Application
holds	O
the	O
distinction	O
for	O
being	O
one	O
of	O
the	O
first	O
,	O
if	O
not	O
the	O
first	O
game	O
to	O
be	O
developed	O
for	O
the	O
Neo	B-Operating_System
Geo	I-Operating_System
platform	O
,	O
in	O
addition	O
to	O
being	O
the	O
only	O
title	O
in	O
the	O
system	O
's	O
library	O
that	O
does	O
not	O
feature	O
the	O
Neo	B-Operating_System
Geo	I-Operating_System
boot	B-Operating_System
screen	I-Operating_System
in	O
its	O
attract	O
mode	O
.	O
</s>
<s>
There	O
are	O
many	O
references	O
to	O
many	O
famous	O
Vietnam	O
War	O
films	O
in	O
the	O
game	O
such	O
as	O
Apocalypse	O
Now	O
and	O
Full	O
Metal	O
Jacket	O
,	O
especially	O
the	O
latter	O
,	O
with	O
the	O
attract	O
sequence	O
showing	O
one	O
of	O
the	O
characters	O
firing	O
off	O
an	O
M60	O
machine	O
gun	O
being	O
a	O
clear	O
portray	O
of	O
the	O
shot	O
of	O
Animal	O
Mother	O
firing	O
on	O
the	O
VC	O
sniper	B-Protocol
in	O
the	O
latter	O
film	O
.	O
</s>
<s>
NAM-1975	B-Application
was	O
initially	O
launched	O
for	O
arcades	O
on	O
April	O
26	O
,	O
1990	O
.	O
</s>
<s>
It	O
was	O
also	O
released	O
for	O
the	O
Neo	B-Operating_System
Geo	I-Operating_System
home	O
system	O
at	O
the	O
same	O
time	O
available	O
to	O
rent	O
or	O
buy	O
.	O
</s>
<s>
It	O
was	O
re-released	O
for	O
the	O
Neo	B-Device
Geo	I-Device
CD	I-Device
on	O
September	O
9	O
,	O
1994	O
as	O
one	O
of	O
the	O
launch	O
titles	O
for	O
the	O
system	O
,	O
with	O
minimal	O
changes	O
compared	O
to	O
the	O
original	O
MVS	O
and	O
AES	O
versions	O
.	O
</s>
<s>
The	O
game	O
has	O
received	O
multiple	O
re-releases	O
in	O
recent	O
years	O
on	O
various	O
digital	O
distribution	O
platforms	O
such	O
as	O
the	O
Virtual	B-Application
Console	I-Application
,	O
PlayStation	B-Device
Network	I-Device
,	O
Nintendo	B-Application
eShop	I-Application
and	O
Xbox	B-Application
Live	I-Application
.	O
</s>
<s>
NAM-1975	B-Application
was	O
also	O
one	O
of	O
the	O
20	O
pre-loaded	O
games	O
included	O
on	O
the	O
Neo	B-Architecture
Geo	I-Architecture
X	I-Architecture
.	O
</s>
<s>
When	O
the	O
Neo	B-Application
Geo	I-Application
AES	I-Application
version	O
was	O
originally	O
launched	O
in	O
Europe	O
,	O
the	O
cover	O
art	O
of	O
copies	O
released	O
in	O
the	O
region	O
were	O
subsequently	O
censored	O
due	O
to	O
the	O
female	O
character	O
on	O
the	O
front	O
having	O
a	O
bare	O
thigh	O
and	O
cleavage	O
exposed	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
NAM-1975	B-Application
on	O
their	O
December	O
15	O
,	O
1990	O
issue	O
as	O
being	O
the	O
twenty-second	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
Out	B-Application
Zone	I-Application
.	O
</s>
<s>
In	O
recent	O
years	O
,	O
NAM-1975	B-Application
has	O
received	O
positive	O
reception	O
from	O
critics	O
.	O
</s>
<s>
In	O
2014	O
,	O
HobbyConsolas	O
identified	O
NAM-1975	B-Application
as	O
one	O
of	O
the	O
twenty	O
best	O
games	O
for	O
the	O
Neo	B-Application
Geo	I-Application
AES	I-Application
.	O
</s>
