<s>
ESWAT	B-Application
:	I-Application
City	I-Application
Under	I-Application
Siege	I-Application
,	O
released	O
in	O
Japan	O
as	O
,	O
is	O
a	O
1990	O
side	O
scrolling	O
action	B-Application
platform	O
video	O
game	O
developed	O
and	O
published	O
by	O
Sega	O
for	O
the	O
Sega	B-Operating_System
Genesis	I-Operating_System
and	O
Sega	O
Master	O
System	O
video	O
game	O
consoles	O
.	O
</s>
<s>
City	O
Under	O
Siege	O
was	O
based	O
on	O
the	O
arcade	O
game	O
Cyber	B-Application
Police	I-Application
ESWAT	I-Application
released	O
a	O
year	O
earlier	O
in	O
1989	O
.	O
</s>
<s>
The	O
game	O
is	O
a	O
sidescrolling	O
platformer	O
similar	O
to	O
Shinobi	B-Application
.	O
</s>
<s>
The	O
final	O
boss	O
of	O
the	O
game	O
,	O
the	O
leader	O
of	O
E.Y.E.	O
,	O
is	O
revealed	O
to	O
be	O
a	O
robot	O
with	O
artificial	B-Application
intelligence	I-Application
that	O
is	O
attempting	O
to	O
replicate	O
its	O
own	O
ICE	O
Combat	O
Suits	O
to	O
take	O
over	O
Liberty	O
.	O
</s>
<s>
Mega	O
Action	B-Application
gave	O
a	O
review	O
score	O
of	O
81%	O
writing	O
:	O
"	O
The	O
graphics	O
are	O
looking	O
dated	O
but	O
the	O
gameplay	O
has	O
stood	O
the	O
test	O
of	O
time.	O
"	O
</s>
<s>
In	O
1992	O
Mega	O
placed	O
the	O
game	O
at	O
#32	O
in	O
their	O
Top	O
Mega	B-Operating_System
Drive	I-Operating_System
Games	O
of	O
All	O
Time	O
.	O
</s>
<s>
Like	O
other	O
arcade	O
ports	O
such	O
as	O
Shinobi	B-Application
,	O
ESWAT	O
featured	O
a	O
"	O
health	O
meter	O
"	O
that	O
would	O
allow	O
the	O
player	O
to	O
take	O
several	O
hits	O
before	O
losing	O
a	O
life	O
,	O
instead	O
of	O
simply	O
one	O
or	O
two	O
.	O
</s>
<s>
A	O
Virtual	B-Application
Console	I-Application
version	O
for	O
the	B-Operating_System
Wii	I-Operating_System
was	O
released	O
in	O
August	O
2007	O
in	O
Japan	O
and	O
in	O
the	O
PAL	O
regions	O
on	O
September	O
7	O
,	O
2007	O
.	O
</s>
<s>
The	O
game	O
also	O
appeared	O
in	O
Sonic	B-Application
's	I-Application
Ultimate	I-Application
Genesis	I-Application
Collection	I-Application
,	O
also	O
known	O
as	O
the	O
Sega	B-Application
Mega	I-Application
Drive	I-Application
Ultimate	I-Application
Collection	I-Application
in	O
Europe	O
and	O
Australia	O
,	O
for	O
Xbox	B-Operating_System
360	I-Operating_System
and	O
PlayStation	B-Operating_System
3	I-Operating_System
.	O
</s>
