<s>
is	O
an	O
arcade	O
game	O
developed	O
and	O
released	O
by	O
Namco	O
and	O
Sega	O
in	O
2000	B-Application
.	O
</s>
<s>
Two	O
years	O
later	O
it	O
was	O
also	O
published	O
as	O
a	O
PlayStation	B-Device
2	I-Device
exclusive	O
title	O
with	O
GunCon	B-Device
2	I-Device
compatibility	O
.	O
</s>
<s>
Ninja	B-Application
Assault	I-Application
was	O
developed	O
by	O
Namco	O
,	O
who	O
also	O
created	O
the	O
Time	B-Application
Crisis	I-Application
series	I-Application
.	O
</s>
<s>
However	O
,	O
this	O
game	O
has	O
more	O
in	O
common	O
with	O
Lethal	B-Application
Enforcers	I-Application
,	O
Virtua	B-Language
Cop	I-Language
,	O
and	O
The	B-Application
House	I-Application
of	I-Application
the	I-Application
Dead	I-Application
series	O
,	O
whereby	O
the	O
movement	O
is	O
completely	O
"	O
on-rails	O
"	O
(	O
i.e.	O
,	O
with	O
no	O
hiding	O
pedal	O
)	O
,	O
and	O
the	O
player	O
must	O
shoot	O
away	O
from	O
the	O
screen	O
to	O
reload	O
.	O
</s>
<s>
Ninja	B-Application
Assault	I-Application
is	O
advertised	O
in	O
in-game	O
email	O
message	O
in	O
Namco	O
's	O
Xenosaga	B-Application
Episode	I-Application
I	I-Application
:	I-Application
Der	I-Application
Wille	I-Application
zur	I-Application
Macht	I-Application
.	O
</s>
<s>
After	O
finishing	O
the	O
PS2	B-Device
release	O
of	O
the	O
game	O
,	O
one	O
would	O
unlock	O
a	O
code	O
that	O
could	O
be	O
entered	O
in	O
the	O
contest	O
at	O
Namco	O
's	O
website	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
Ninja	B-Application
Assault	I-Application
on	O
their	O
December	O
15	O
,	O
2000	B-Application
issue	O
as	O
being	O
the	O
fourth	O
most-successful	O
dedicated	O
arcade	O
game	O
of	O
the	O
month	O
.	O
</s>
<s>
The	O
PS2	B-Device
version	O
received	O
"	O
mixed	O
"	O
reviews	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
<s>
In	O
its	O
preview	O
,	O
IGN	O
compared	O
it	O
with	O
The	B-Application
House	I-Application
of	I-Application
the	I-Application
Dead	I-Application
2	I-Application
.	O
</s>
