<s>
It	O
was	O
released	O
worldwide	O
in	O
2010	O
as	O
an	O
exclusive	O
title	O
for	O
iOS	B-Application
,	O
but	O
it	O
was	O
later	O
ported	O
to	O
the	O
Android	B-Application
,	O
Windows	O
Phone	O
7	O
,	O
and	O
PlayStation	B-Device
Vita	I-Device
.	O
</s>
<s>
Produced	O
by	O
Takehiro	O
Ando	O
,	O
characters	O
were	O
designed	O
by	O
Yusuke	O
Naora	O
,	O
the	O
art	O
director	O
of	O
Final	B-Application
Fantasy	I-Application
VII	I-Application
,	O
VIII	B-Application
,	O
and	O
X	O
among	O
other	O
successful	O
titles	O
.	O
</s>
<s>
Chaos	B-Application
Rings	I-Application
features	O
four	O
scenarios	O
.	O
</s>
<s>
A	O
prequel	O
,	O
Chaos	B-Application
Rings	I-Application
Omega	I-Application
,	O
was	O
released	O
on	O
May	O
19	O
,	O
2011	O
,	O
and	O
two	O
sequels	O
,	O
Chaos	B-Application
Rings	I-Application
II	I-Application
,	O
released	O
on	O
March	O
15	O
,	O
2012	O
,	O
and	O
Chaos	B-Application
Rings	I-Application
III	I-Application
,	O
released	O
on	O
October	O
16	O
,	O
2014	O
.	O
</s>
<s>
Chaos	B-Application
Rings	I-Application
begins	O
as	O
a	O
dungeon	O
crawl	O
where	O
navigation	O
and	O
battles	O
are	O
done	O
as	O
a	O
two-person	O
party	O
that	O
is	O
chosen	O
prior	O
to	O
gameplay	O
.	O
</s>
<s>
Chaos	B-Application
Rings	I-Application
takes	O
place	O
in	O
a	O
mysterious	O
fictional	O
location	O
known	O
as	O
the	O
Ark	O
Arena	O
that	O
holds	O
many	O
dungeons	O
.	O
</s>
<s>
When	O
not	O
in	O
dungeon-play	O
,	O
characters	O
return	O
to	O
a	O
"	O
home	O
"	O
area	O
,	O
where	O
health	O
points	O
and	O
magic	B-Application
points	I-Application
are	O
instantly	O
recovered	O
.	O
</s>
<s>
The	O
characters	O
consist	O
of	O
five	O
couples	O
:	O
Garrick	O
and	O
Alto	O
,	O
Escher	O
and	O
Musiea	O
,	O
Olgar	O
and	O
Vahti	O
,	O
Eluca	O
and	O
Zhamo	O
,	O
and	O
Ayuta	O
and	O
Mana	B-Application
.	O
</s>
<s>
He	O
is	O
a	O
loyal	O
servant	O
of	O
Princess	O
Mana	B-Application
,	O
with	O
whom	O
he	O
is	O
in	O
love	O
.	O
</s>
<s>
Originally	O
introduced	O
as	O
Princess	O
Mana	B-Application
from	O
an	O
eastern	O
kingdom	O
,	O
her	O
true	O
identity	O
was	O
later	O
revealed	O
as	O
Shea	O
,	O
a	O
body	O
double	O
to	O
the	O
real	O
princess	O
.	O
</s>
<s>
It	O
is	O
unclear	O
whether	O
or	O
not	O
the	O
Princess	O
Manas	B-Application
in	O
the	O
other	O
three	O
time	O
spaces	O
are	O
the	O
true	O
princess	O
,	O
or	O
still	O
one	O
of	O
her	O
body	O
doubles	O
.	O
</s>
<s>
In	O
his	O
first	O
Ark	O
Arena	O
,	O
he	O
killed	O
his	O
fiancee	O
's	O
own	O
parents	O
in	O
combat	O
(	O
Chaos	B-Application
Rings	I-Application
Omega	I-Application
reveals	O
the	O
context	O
,	O
however	O
)	O
.	O
</s>
<s>
The	O
Agent	O
in	O
his	O
plot	O
line	O
is	O
different	O
in	O
that	O
it	O
absorbs	O
subjects	O
to	O
gain	O
their	O
abilities	O
,	O
doing	O
so	O
with	O
Theia	O
's	O
clone	O
in	O
his	O
first	O
fight	O
,	O
and	O
with	O
Princess	O
Mana	B-Application
for	O
her	O
life	O
force	O
channeling	O
abilities	O
in	O
the	O
second	O
battle	O
.	O
</s>
<s>
As	O
Olgar	O
grieves	O
,	O
Mana	B-Application
manages	O
to	O
transfer	O
what	O
was	O
left	O
of	O
her	O
life	O
force	O
after	O
using	O
it	O
to	O
defeat	O
the	O
Executioner	O
,	O
once	O
,	O
to	O
Vahti	O
,	O
preserving	O
her	O
life	O
at	O
the	O
cost	O
of	O
Ayuta	O
's	O
and	O
her	O
own	O
.	O
</s>
<s>
In	O
Chaos	B-Application
Rings	I-Application
four	O
couples	O
compete	O
in	O
the	O
ominously	O
named	O
Ark	O
Arena	O
(	O
one	O
extra	O
pair	O
,	O
Garrick	O
and	O
Alto	O
,	O
voiced	O
by	O
Shin-ichiro	O
Miki	O
and	O
Asami	O
Seto	O
respectively	O
,	O
are	O
eliminated	O
early	O
on	O
in	O
all	O
four	O
storylines	O
and	O
cannot	O
be	O
selected	O
for	O
play	O
)	O
.	O
</s>
<s>
The	O
grim	O
reaper-like	O
creature	O
is	O
revealed	O
to	O
be	O
the	O
Executioner	O
(	O
though	O
its	O
name	O
is	O
revealed	O
earlier	O
in	O
the	O
Ayuta-Mana/Shea	O
route	O
)	O
,	O
and	O
his	O
purpose	O
is	O
to	O
remove	O
insubordinate	O
or	O
defeated	O
competitors	O
in	O
the	O
Ark	O
Arena	O
.	O
</s>
<s>
Noriyasu	O
Agematsu	O
,	O
of	O
the	O
musical	O
group	O
Elements	O
Garden	O
,	O
composed	O
all	O
the	O
music	O
to	O
Chaos	B-Application
Rings	I-Application
.	O
</s>
<s>
Following	O
the	O
release	O
of	O
the	O
game	O
,	O
Square	O
Enix	O
released	O
the	O
Chaos	B-Application
Rings	I-Application
Original	O
Soundtrack	O
for	O
digital	O
download	O
on	O
June	O
23	O
,	O
2010	O
via	O
the	O
iTunes	O
Store	O
.	O
</s>
<s>
The	O
iPhone	O
and	O
iPad	O
versions	O
received	O
"	O
universal	O
acclaim	O
"	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
<s>
Square	O
Enix	O
has	O
published	O
two	O
more	O
games	O
in	O
the	O
Chaos	B-Application
Rings	I-Application
series	O
to	O
date	O
.	O
</s>
<s>
A	O
trailer	O
of	O
the	O
prequel	O
entitled	O
Chaos	B-Application
Rings	I-Application
Omega	I-Application
has	O
since	O
been	O
released	O
.	O
</s>
<s>
Chaos	B-Application
Rings	I-Application
Omega	I-Application
was	O
released	O
on	O
May	O
19	O
,	O
2011	O
in	O
North	O
America	O
and	O
the	O
next	O
day	O
in	O
Japan	O
.	O
</s>
<s>
On	O
May	O
20	O
,	O
2011	O
,	O
a	O
teaser	O
trailer	O
for	O
Chaos	B-Application
Rings	I-Application
II	I-Application
was	O
released	O
.	O
</s>
