<s>
is	O
a	O
2004	O
vertically	O
scrolling	O
shooter	O
arcade	B-Application
video	I-Application
game	I-Application
developed	O
by	O
MileStone	O
.	O
</s>
<s>
Chaos	B-Application
Field	I-Application
is	O
the	O
first	O
game	O
from	O
MileStone	O
,	O
a	O
company	O
founded	O
by	O
former	O
Compile	O
employees	O
looking	O
to	O
develop	O
high	O
quality	O
shooters	O
similar	O
to	O
those	O
Compile	O
was	O
known	O
for	O
in	O
the	O
past	O
.	O
</s>
<s>
After	O
its	O
release	O
in	O
Japanese	O
arcades	O
,	O
it	O
was	O
ported	O
to	O
the	B-Operating_System
Dreamcast	I-Operating_System
,	O
PlayStation	B-Device
2	I-Device
,	O
and	O
GameCube	B-Application
in	O
Japan	O
.	O
</s>
<s>
The	O
GameCube	B-Application
version	O
was	O
also	O
released	O
in	O
North	O
America	O
,	O
and	O
included	O
a	O
mode	O
that	O
adds	O
small	O
waves	O
of	O
enemies	O
between	O
the	O
bosses	O
.	O
</s>
<s>
Chaos	B-Application
Field	I-Application
is	O
a	O
vertically	O
scrolling	O
shoot	O
'	O
em	O
up	O
with	O
consecutive	O
boss	O
battles	O
.	O
</s>
<s>
The	O
player	O
can	O
flip	O
the	O
environment	O
at	O
will	O
between	O
two	O
parallel	O
worlds	O
,	O
the	O
"	O
order	O
field	O
"	O
and	O
the	O
"	O
chaos	B-Application
field	I-Application
"	O
.	O
</s>
<s>
Gameplay	O
is	O
normal	O
in	O
the	O
order	O
field	O
,	O
but	O
in	O
the	O
chaos	B-Application
field	I-Application
,	O
the	O
player	O
's	O
weapons	O
are	O
more	O
powerful	O
,	O
the	O
special	O
homing	O
weapons	O
can	O
destroy	O
enemy	O
bullets	O
,	O
and	O
enemies	O
will	O
fire	O
more	O
bullets	O
.	O
</s>
<s>
Chaos	B-Application
Field	I-Application
was	O
the	O
first	O
game	O
developed	O
by	O
MileStone	O
Inc.	O
,	O
who	O
were	O
desiring	O
to	O
make	O
a	O
shooter	O
of	O
their	O
own	O
.	O
</s>
<s>
Most	O
of	O
the	O
staff	O
originally	O
joined	O
Compile	O
because	O
of	O
the	O
company	O
's	O
positive	O
reputation	O
with	O
shooting	O
games	O
like	O
the	O
Aleste	B-Application
series	I-Application
,	O
but	O
were	O
left	O
unsatisfied	O
from	O
Compile	O
's	O
growing	O
focus	O
on	O
other	O
franchises	O
like	O
Puyo	B-Application
Puyo	I-Application
.	O
</s>
<s>
The	O
team	O
decided	O
to	O
develop	O
the	O
game	O
for	O
Sega	O
's	O
NAOMI	O
arcade	B-Application
platform	O
since	O
they	O
were	O
experienced	O
with	O
it	O
and	O
had	O
a	O
working	O
relationship	O
with	O
Sega	O
.	O
</s>
<s>
Chaos	B-Application
Field	I-Application
was	O
first	O
released	O
in	O
Japanese	O
arcades	O
on	O
May	O
25	O
,	O
2004	O
.	O
</s>
<s>
It	O
received	O
a	O
Dreamcast	B-Operating_System
port	O
in	O
December	O
that	O
year	O
,	O
after	O
the	O
console	O
was	O
already	O
discontinued	O
by	O
Sega	O
.	O
</s>
<s>
The	O
team	O
also	O
had	O
experience	O
with	O
developing	O
for	O
the	O
GameCube	B-Application
and	O
PlayStation	B-Device
2	I-Device
,	O
and	O
so	O
created	O
ports	O
for	O
those	O
platforms	O
as	O
well	O
.	O
</s>
<s>
The	O
GameCube	B-Application
version	O
,	O
Chaos	B-Application
Field	I-Application
Expanded	O
,	O
was	O
released	O
in	O
February	O
2005	O
in	O
Japan	O
by	O
Sega	O
,	O
with	O
a	O
North	O
American	O
version	O
published	O
by	O
O	O
~	O
3	O
Entertainment	O
in	O
December	O
that	O
year	O
.	O
</s>
<s>
Also	O
in	O
December	O
,	O
the	O
PlayStation	B-Device
2	I-Device
version	O
titled	O
Chaos	B-Application
Field	I-Application
New	I-Application
Order	I-Application
was	O
released	O
in	O
Japan	O
.	O
</s>
<s>
Chaos	B-Application
Field	I-Application
is	O
included	O
in	O
the	B-Operating_System
Wii	I-Operating_System
compilations	O
Ultimate	O
Shooting	O
Collection	O
(	O
2009	O
)	O
and	O
Milestone	O
Shooting	O
Collection	O
2	O
(	O
2010	O
)	O
.	O
</s>
<s>
Critics	O
found	O
Chaos	B-Application
Field	I-Application
to	O
be	O
a	O
generic	O
shooter	O
.	O
</s>
<s>
In	O
particular	O
,	O
some	O
critics	O
found	O
the	O
game	O
inferior	O
to	O
Ikaruga	B-Application
,	O
another	O
arcade	B-Application
shooter	O
ported	O
to	O
the	O
GameCube	B-Application
.	O
</s>
<s>
Some	O
critics	O
like	O
IGN	O
only	O
recommended	O
Chaos	B-Application
Field	I-Application
to	O
hardcore	O
fans	O
of	O
the	O
genre	O
who	O
desired	O
to	O
attain	O
the	O
highest	O
scores	O
,	O
and	O
pointed	O
casual	O
players	O
to	O
Ikaruga	B-Application
.	O
</s>
<s>
The	O
graphics	O
were	O
criticized	O
as	O
generic	O
and	O
outdated	O
,	O
and	O
the	O
sound	O
effects	O
on	O
the	O
GameCube	B-Application
version	O
were	O
described	O
as	O
almost	O
nonexistent	O
.	O
</s>
