<s>
is	O
a	O
side-scrolling	O
run	O
and	O
gun	O
video	O
game	O
developed	O
and	O
released	O
by	O
Sega	O
for	O
arcades	B-Application
in	O
1989	O
.	O
</s>
<s>
In	O
1990	O
,	O
Sega	O
released	O
a	O
Mega	B-Operating_System
Drive/Genesis	I-Operating_System
version	O
known	O
in	O
North	O
America	O
as	O
ESWAT	B-Application
:	I-Application
City	I-Application
Under	I-Application
Siege	I-Application
.	O
</s>
<s>
The	O
gameplay	O
is	O
similar	O
to	O
Sega	O
's	O
own	O
Shinobi	B-Application
(	O
1987	O
)	O
,	O
as	O
the	O
player	O
has	O
the	O
ability	O
to	O
jump	O
up	O
and	O
down	O
between	O
planes	O
where	O
possible	O
.	O
</s>
<s>
Each	O
player	O
requires	O
one	O
start	O
button	O
,	O
one	O
joystick	B-Device
,	O
and	O
three	O
action	O
buttons	O
(	O
shoot	O
,	O
jump	O
,	O
special	O
weapons	O
)	O
.	O
</s>
<s>
This	O
game	O
utilizes	O
a	O
standard	O
resolution	O
arcade	B-Application
monitor	O
.	O
</s>
<s>
Computer	O
and	O
Video	O
Games	O
called	O
the	O
game	O
a	O
cross	O
between	O
NARC	B-Application
and	O
RoboCop	B-Application
,	O
but	O
wrote	O
that	O
it	O
"	O
does	O
n't	O
quite	O
have	O
the	O
flair	O
of	O
either	O
"	O
.	O
</s>
