<s>
is	O
an	O
action	B-Application
role-playing	I-Application
video	I-Application
game	I-Application
developed	O
and	O
published	O
by	O
Square	O
Enix	O
in	O
collaboration	O
with	O
Disney	O
Interactive	O
Studios	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
,	O
serving	O
as	O
the	O
sixth	O
installment	O
in	O
the	O
Kingdom	B-Application
Hearts	I-Application
series	O
.	O
</s>
<s>
An	O
international	O
version	O
of	O
the	O
game	O
titled	O
Kingdom	B-Application
Hearts	I-Application
Birth	I-Application
by	I-Application
Sleep	I-Application
Final	I-Application
Mix	I-Application
was	O
released	O
in	O
Japan	O
in	O
January	O
2011	O
featuring	O
the	O
changes	O
made	O
in	O
the	O
non-Japanese	O
versions	O
.	O
</s>
<s>
A	O
direct	O
sequel	O
,	O
Kingdom	B-Application
Hearts	I-Application
0.2	O
:	O
Birth	B-Application
by	I-Application
Sleep	I-Application
-	O
A	O
Fragmentary	O
Passage	O
,	O
was	O
released	O
in	O
January	O
2017	O
as	O
a	O
part	O
of	O
a	O
bundle	O
of	O
games	O
called	O
Kingdom	B-Application
Hearts	I-Application
HD	I-Application
2.8	I-Application
Final	I-Application
Chapter	I-Application
Prologue	I-Application
.	O
</s>
<s>
It	O
is	O
a	O
prequel	B-Application
to	O
the	O
original	O
Kingdom	B-Application
Hearts	I-Application
,	O
taking	O
place	O
ten	O
years	O
before	O
.	O
</s>
<s>
The	O
game	O
centers	O
on	O
the	O
journeys	O
of	O
Terra	O
,	O
Aqua	O
and	O
Ventus	O
,	O
characters	O
briefly	O
featured	O
in	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
in	O
their	O
quest	O
to	O
locate	O
the	O
missing	O
Master	O
Xehanort	O
,	O
and	O
protect	O
the	O
worlds	O
from	O
creatures	O
known	O
as	O
the	O
Unversed	O
.	O
</s>
<s>
Development	O
of	O
the	O
game	O
began	O
in	O
June	O
2005	O
with	O
parts	O
of	O
the	O
game	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
Final	O
Mix	O
meant	O
to	O
bring	O
clues	O
of	O
Birth	B-Application
by	I-Application
Sleep	I-Application
.	O
</s>
<s>
Nomura	O
has	O
referred	O
to	O
the	O
game	O
as	O
"	O
Episode	O
0	O
"	O
(	O
and	O
later	O
"	O
Episode	O
0.1	O
"	O
following	O
the	O
release	O
of	O
Kingdom	B-Application
Hearts	I-Application
χ	I-Application
)	O
saying	O
that	O
the	O
game	O
is	O
on	O
the	O
same	O
scale	O
and	O
plays	O
as	O
large	O
a	O
role	O
in	O
the	O
series	O
as	O
Kingdom	B-Application
Hearts	I-Application
and	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
.	O
</s>
<s>
A	O
high	O
definition	O
version	O
of	O
the	O
Final	O
Mix	O
edition	O
was	O
released	O
for	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
in	O
2014	O
,	O
PlayStation	B-Operating_System
4	I-Operating_System
in	O
2017	O
,	O
Xbox	B-Device
One	I-Device
in	O
February	O
2020	O
,	O
Windows	O
in	O
2021	O
,	O
and	O
Nintendo	B-Application
Switch	I-Application
as	O
a	O
part	O
of	O
the	O
Kingdom	B-Application
Hearts	I-Application
HD	I-Application
2.5	I-Application
Remix	I-Application
collection	O
.	O
</s>
<s>
Birth	B-Application
by	I-Application
Sleep	I-Application
is	O
an	O
action	B-Application
role-playing	I-Application
game	I-Application
with	O
hack	B-Application
and	I-Application
slash	I-Application
elements	O
that	O
introduces	O
a	O
gameplay	O
aspect	O
to	O
the	O
series	O
called	O
the	O
Command	O
System	O
.	O
</s>
<s>
The	O
Command	O
Board	O
plays	O
like	O
a	O
simplified	O
version	O
of	O
Fortune	B-Application
Street	I-Application
.	O
</s>
<s>
Birth	B-Application
by	I-Application
Sleep	I-Application
is	O
a	O
prequel	B-Application
set	O
ten	O
years	O
prior	O
to	O
the	O
first	O
Kingdom	B-Application
Hearts	I-Application
game	O
.	O
</s>
<s>
Like	O
the	O
other	O
games	O
in	O
the	O
series	O
,	O
the	O
player	O
progresses	O
through	O
a	O
collection	O
of	O
various	O
worlds	O
,	O
based	O
on	O
various	O
locales	O
from	O
the	O
Disney	O
animated	O
features	O
canon	O
:	O
Dwarf	O
Woodlands	O
from	O
Snow	O
White	O
and	O
the	O
Seven	O
Dwarfs	O
,	O
Enchanted	O
Dominion	O
from	O
Sleeping	O
Beauty	O
,	O
Castle	O
of	O
Dreams	O
from	O
Cinderella	O
,	O
Olympus	O
Coliseum	O
from	O
Hercules	O
,	O
Deep	O
Space	O
from	O
Lilo	B-Device
&	I-Device
Stitch	I-Device
,	O
Neverland	O
from	O
Peter	O
Pan	O
and	O
Mysterious	O
Tower	O
from	O
Fantasia	O
.	O
</s>
<s>
Worlds	O
such	O
as	O
Destiny	O
Islands	O
and	O
Castle	O
Oblivion	O
also	O
appear	O
in	O
the	O
form	O
of	O
cutscenes	O
,	O
while	O
the	O
100	O
Acre	O
Wood	O
from	O
the	O
Winnie	O
the	O
Pooh	O
franchise	O
,	O
which	O
had	O
appeared	O
in	O
most	O
other	O
games	O
of	O
the	O
series	O
,	O
only	O
appears	O
as	O
a	O
Command	O
Board	O
in	O
Birth	B-Application
by	I-Application
Sleep	I-Application
.	O
</s>
<s>
They	O
then	O
added	O
the	O
worlds	O
of	O
Neverland	O
and	O
Deep	O
Space	O
to	O
add	O
variety	O
to	O
the	O
game	O
,	O
while	O
Olympus	O
Coliseum	O
was	O
selected	O
to	O
reflect	O
the	O
game	O
's	O
earlier	O
setting	O
compared	O
to	O
the	O
original	O
Kingdom	B-Application
Hearts	I-Application
.	O
</s>
<s>
As	O
with	O
the	O
Heartless	O
in	O
Kingdom	B-Application
Hearts	I-Application
and	O
the	O
Nobodies	O
in	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
,	O
Birth	B-Application
by	I-Application
Sleep	I-Application
introduces	O
a	O
new	O
type	O
of	O
enemy	O
:	O
the	O
Unversed	O
,	O
fledgling	O
emotions	O
that	O
are	O
"	O
not	O
well-versed	O
in	O
their	O
own	O
existences	O
"	O
and	O
feed	O
on	O
negativity	O
.	O
</s>
<s>
As	O
with	O
the	O
other	O
games	O
in	O
the	O
series	O
,	O
Birth	B-Application
by	I-Application
Sleep	I-Application
features	O
an	O
extensive	O
cast	O
of	O
Disney	O
characters	O
.	O
</s>
<s>
The	O
most	O
prominent	O
of	O
these	O
characters	O
is	O
Mickey	B-Application
Mouse	I-Application
,	O
the	O
king	O
of	O
Disney	O
Castle	O
,	O
who	O
serves	O
as	O
a	O
Keyblade	O
apprentice	O
under	O
the	O
sorcerer	O
Yen	O
Sid	O
at	O
this	O
point	O
in	O
the	O
series	O
chronology	O
.	O
</s>
<s>
Most	O
other	O
Disney	O
characters	O
remain	O
in	O
their	O
respective	O
worlds	O
regardless	O
of	O
their	O
overall	O
importance	O
to	O
the	O
story	O
in	O
previous	O
installments	O
,	O
such	O
as	O
Maleficent	O
and	O
Pete	O
,	O
who	O
served	O
as	O
major	O
antagonists	O
between	O
Kingdom	B-Application
Hearts	I-Application
and	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
,	O
and	O
a	O
number	O
of	O
the	O
Princesses	O
of	O
Heart	O
.	O
</s>
<s>
Unlike	O
the	O
other	O
major	O
installments	O
,	O
which	O
also	O
featured	O
casts	O
of	O
various	O
characters	O
throughout	O
the	O
Final	B-Application
Fantasy	I-Application
series	O
,	O
Birth	B-Application
by	I-Application
Sleep	I-Application
only	O
features	O
two	O
of	O
these	O
characters	O
:	O
Zack	O
Fair	O
from	O
Final	B-Application
Fantasy	I-Application
VII	I-Application
,	O
and	O
the	O
Moogles	O
,	O
creatures	O
from	O
several	O
of	O
the	O
Final	B-Application
Fantasy	I-Application
games	I-Application
,	O
who	O
sell	O
items	O
to	O
the	O
player	O
.	O
</s>
<s>
As	O
Birth	B-Application
by	I-Application
Sleep	I-Application
is	O
a	O
prequel	B-Application
of	O
the	O
first	O
Kingdom	B-Application
Hearts	I-Application
title	O
,	O
the	O
staff	O
decided	O
to	O
add	O
Zack	O
to	O
the	O
title	O
as	O
he	O
is	O
the	O
protagonist	O
of	O
the	O
Final	B-Application
Fantasy	I-Application
VII	I-Application
prequel	B-Application
,	O
Crisis	B-Application
Core	I-Application
:	I-Application
Final	I-Application
Fantasy	I-Application
VII	I-Application
.	O
</s>
<s>
Terra	O
,	O
Aqua	O
,	O
and	O
Ventus	O
reunite	O
at	O
the	O
Keyblade	O
Graveyard	O
,	O
where	O
Xehanort	O
and	O
Vanitas	O
reveal	O
their	O
plan	O
to	O
use	O
the	O
χ-blade	O
to	O
unlock	O
Kingdom	B-Application
Hearts	I-Application
and	O
start	O
a	O
Keyblade	O
War	O
,	O
an	O
apocalyptic	O
event	O
that	O
nearly	O
destroyed	O
the	O
world	O
in	O
the	O
past	O
.	O
</s>
<s>
In	O
the	O
game	O
's	O
secret	O
ending	O
,	O
which	O
takes	O
place	O
after	O
the	O
events	O
of	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
,	O
Aqua	O
meets	O
Ansem	O
in	O
the	O
realm	O
of	O
darkness	O
and	O
learns	O
from	O
him	O
about	O
Sora	O
,	O
who	O
has	O
the	O
power	O
to	O
save	O
those	O
connected	O
to	O
his	O
heart	O
.	O
</s>
<s>
Development	O
of	O
the	O
game	O
began	O
in	O
June	O
2005	O
and	O
was	O
originally	O
intended	O
for	O
the	O
PlayStation	B-Device
2	I-Device
with	O
Sora	O
as	O
the	O
prototype	O
protagonist	O
of	O
the	O
game	O
.	O
</s>
<s>
Birth	B-Application
by	I-Application
Sleep	I-Application
was	O
developed	O
by	O
Square	O
Enix	O
's	O
fifth	O
Product	O
Development	O
Division	O
,	O
based	O
in	O
Osaka	O
,	O
the	O
same	O
team	O
behind	O
Kingdom	B-Application
Hearts	I-Application
Re:Chain	O
of	O
Memories	O
,	O
and	O
uses	O
the	O
same	O
graphical	O
engine	O
as	O
both	O
Crisis	B-Application
Core	I-Application
:	I-Application
Final	I-Application
Fantasy	I-Application
VII	I-Application
and	O
Dissidia	B-Application
Final	I-Application
Fantasy	I-Application
.	O
</s>
<s>
During	O
development	O
of	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
,	O
the	O
Osaka-based	O
team	O
had	O
requested	O
to	O
be	O
involved	O
in	O
a	O
spin-off	O
if	O
one	O
were	O
to	O
be	O
made	O
.	O
</s>
<s>
Development	O
of	O
the	O
game	O
began	O
before	O
the	O
release	O
of	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
Final	O
Mix+	O
.	O
</s>
<s>
When	O
development	O
resumed	O
,	O
the	O
team	O
changed	O
the	O
platform	O
to	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
so	O
as	O
to	O
make	O
use	O
of	O
the	O
PSP	B-Operating_System
's	O
functions	O
such	O
as	O
co-operative	O
and	O
competitive	O
multiplayer	O
gameplay	O
.	O
</s>
<s>
The	O
title	O
of	O
the	O
game	O
is	O
based	O
on	O
II	O
Final	O
Mixs	O
secret	O
ending	O
,	O
"	O
Birth	B-Application
by	I-Application
Sleep	I-Application
"	O
,	O
a	O
title	O
which	O
director	O
Tetsuya	O
Nomura	O
developed	O
as	O
he	O
wanted	O
a	O
phrase	O
having	O
"	O
by	O
"	O
as	O
well	O
as	O
to	O
use	O
an	O
English	O
title	O
like	O
previous	O
games	O
.	O
</s>
<s>
Nomura	O
has	O
referred	O
to	O
the	O
game	O
as	O
"	O
Episode	O
0	O
"	O
,	O
saying	O
that	O
the	O
game	O
is	O
on	O
the	O
same	O
scale	O
and	O
plays	O
as	O
big	O
an	O
importance	O
as	O
Kingdom	B-Application
Hearts	I-Application
and	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
.	O
</s>
<s>
The	O
Disney	O
worlds	O
were	O
chosen	O
to	O
expand	O
the	O
characters	O
of	O
the	O
Princesess	O
of	O
Light	O
as	O
well	O
as	O
Maleficent	O
's	O
who	O
are	O
connected	O
with	O
the	O
events	O
of	O
the	O
first	O
Kingdom	B-Application
Hearts	I-Application
game	O
,	O
while	O
the	O
worlds	O
of	O
Neverland	O
and	O
Deep	O
Space	O
were	O
chosen	O
to	O
add	O
variety	O
to	O
the	O
game	O
,	O
and	O
Olympus	O
Coliseum	O
was	O
selected	O
to	O
reflect	O
the	O
game	O
's	O
earlier	O
setting	O
compared	O
to	O
the	O
original	O
Kingdom	B-Application
Hearts	I-Application
.	O
</s>
<s>
Birth	B-Application
by	I-Application
Sleep	I-Application
was	O
directed	O
by	O
Nomura	O
and	O
co-directed	O
by	O
Tai	O
Yasue	O
.	O
</s>
<s>
It	O
was	O
announced	O
alongside	O
Kingdom	B-Application
Hearts	I-Application
358/2	I-Application
Days	I-Application
and	O
Kingdom	B-Application
Hearts	I-Application
coded	I-Application
at	O
the	O
Tokyo	O
Game	O
Show	O
on	O
September	O
20	O
,	O
2007	O
,	O
where	O
a	O
trailer	O
was	O
shown	O
in	O
a	O
photo-prohibited	O
theater	O
.	O
</s>
<s>
Nomura	O
also	O
confirmed	O
in	O
an	O
interview	O
that	O
Birth	B-Application
by	I-Application
Sleep	I-Application
would	O
contain	O
a	O
secret	O
ending	O
like	O
in	O
Kingdom	B-Application
Hearts	I-Application
and	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
for	O
the	B-Application
next	I-Application
game	I-Application
in	O
the	O
Kingdom	B-Application
Hearts	I-Application
series	O
,	O
which	O
he	O
confirmed	O
to	O
be	O
a	O
main	O
game	O
and	O
the	O
one	O
which	O
Nomura	O
stated	O
would	O
link	O
up	O
Birth	B-Application
by	I-Application
Sleep	I-Application
,	O
358/2	B-Application
Days	I-Application
and	O
coded	O
.	O
</s>
<s>
He	O
also	O
confirmed	O
that	O
a	O
Birth	B-Application
by	I-Application
Sleep	I-Application
demo	O
would	O
indeed	O
be	O
playable	O
at	O
the	O
2009	O
Tokyo	O
Games	O
Show	O
together	O
with	O
a	O
new	O
trailer	O
.	O
</s>
<s>
In	O
late	O
October	O
2009	O
,	O
Nomura	O
revealed	O
that	O
he	O
was	O
currently	O
designing	O
the	O
cover	O
art	O
for	O
Birth	B-Application
by	I-Application
Sleep	I-Application
as	O
well	O
as	O
editing	O
the	O
staff	O
rolls	O
due	O
to	O
there	O
being	O
three	O
main	O
characters	O
in	O
the	O
game	O
.	O
</s>
<s>
As	O
with	O
coded	O
and	O
358/2	B-Application
Days	I-Application
,	O
Yoko	O
Shimomura	O
,	O
the	O
series	O
 '	O
main	O
composer	O
,	O
composed	O
the	O
most	O
prominent	O
themes	O
,	O
while	O
the	O
rest	O
was	O
created	O
by	O
other	O
composers	O
.	O
</s>
<s>
Like	O
Kingdom	B-Application
Hearts	I-Application
and	O
Kingdom	B-Application
Hearts	I-Application
Re	O
:	O
Chain	O
of	O
Memories	O
,	O
Birth	B-Application
by	I-Application
Sleep	I-Application
uses	O
Hikaru	O
Utada	O
's	O
theme	O
song	O
"	O
Hikari	O
"	O
for	O
the	O
Japanese	O
version	O
and	O
its	O
English	O
version	O
,	O
"	O
Simple	O
and	O
Clean	O
"	O
,	O
in	O
the	O
other	O
releases	O
.	O
</s>
<s>
Development	O
of	O
the	O
movie	O
began	O
in	O
October	O
where	O
Nomura	O
noted	O
in	O
the	O
blog	O
that	O
the	O
game	O
would	O
contain	O
a	O
teaser	O
to	O
the	O
next	O
major	O
Kingdom	B-Application
Hearts	I-Application
game	O
similar	O
to	O
the	O
teasers	O
in	O
previous	O
games	O
in	O
the	O
series	O
.	O
</s>
<s>
In	O
November	O
2011	O
,	O
Sony	O
announced	O
Birth	B-Application
by	I-Application
Sleep	I-Application
would	O
receive	O
the	O
"	O
Gold	O
Prize	O
"	O
for	O
selling	O
over	O
500,000	O
units	O
in	O
Japan	O
.	O
</s>
<s>
1UP.com	O
echoed	O
similar	O
statements	O
,	O
praising	O
the	O
visuals	O
and	O
stating	O
it	O
"	O
plays	O
better	O
"	O
than	O
the	O
previous	O
Kingdom	B-Application
Hearts	I-Application
games	O
.	O
</s>
<s>
1UP	O
also	O
put	O
it	O
on	O
their	O
article	O
"	O
Top	O
10	O
PSP	B-Operating_System
Games	O
of	O
2010	O
"	O
,	O
while	O
Gamasutra	O
put	O
it	O
in	O
their	O
"	O
The	O
Most	O
Anticipated	O
Games	O
Of	O
2010	O
"	O
and	O
"	O
The	O
Most-Awaited	O
Games	O
Of	O
2009	O
:	O
PlayStation	B-Operating_System
Portable	I-Operating_System
"	O
articles	O
.	O
</s>
<s>
IGN	O
featured	O
it	O
as	O
nominated	O
of	O
2010	O
's	O
"	O
Best	O
of	O
E3	O
Award	O
"	O
in	O
the	O
category	O
Best	O
PSP	B-Operating_System
Games	O
.	O
</s>
<s>
GameTrailers	O
also	O
had	O
praise	O
for	O
the	O
new	O
title	O
and	O
gave	O
it	O
a	O
nomination	O
for	O
Best	O
PSP	B-Operating_System
Game	O
of	O
E3	O
2010	O
.	O
</s>
<s>
Kingdom	B-Application
Hearts	I-Application
Birth	I-Application
by	I-Application
Sleep	I-Application
has	O
received	O
positive	O
reviews	O
from	O
gaming	O
reviewers	O
.	O
</s>
<s>
The	O
game	O
's	O
average	O
score	O
is	O
of	O
82	O
out	O
of	O
100	O
on	O
Metacritic	O
,	O
becoming	O
the	O
fourth	O
highest	O
ranking	O
Kingdom	B-Application
Hearts	I-Application
game	O
behind	O
Kingdom	B-Application
Hearts	I-Application
,	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
,	O
and	O
Kingdom	B-Application
Hearts	I-Application
III	O
.	O
</s>
<s>
The	O
game	O
has	O
been	O
highly	O
praised	O
by	O
Japanese	O
gaming	O
magazine	O
,	O
Famitsu	O
,	O
whose	O
four	O
reviewers	O
gave	O
scores	O
of	O
10/9/9/9	O
,	O
for	O
a	O
total	O
of	O
37/40	O
,	O
the	O
third-highest	O
rated	O
game	O
in	O
the	O
Kingdom	B-Application
Hearts	I-Application
series	O
behind	O
Dream	B-Application
Drop	I-Application
Distance	I-Application
and	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
.	O
</s>
<s>
PlayStation	O
:	O
The	O
Official	O
Magazine	O
(	O
PSM	O
)	O
agreed	O
calling	O
the	O
fighting	O
system	O
"	O
one	O
of	O
the	O
deepest	O
,	O
most	O
rewarding	O
"	O
ones	O
from	O
the	O
PSP	B-Operating_System
.	O
</s>
<s>
A	O
common	O
complaint	O
has	O
been	O
the	O
game	O
's	O
loading	O
times	O
,	O
which	O
tended	O
to	O
be	O
very	O
long	O
depending	O
on	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
's	O
memory	O
.	O
</s>
<s>
Visuals	O
were	O
also	O
well	O
received	O
for	O
being	O
similar	O
to	O
the	O
ones	O
from	O
PlayStation	B-Device
2	I-Device
's	O
games	O
with	O
praise	O
on	O
the	O
design	O
of	O
the	O
worlds	O
,	O
although	O
a	O
lack	O
of	O
details	O
was	O
also	O
noted	O
.	O
</s>
<s>
Sites	O
have	O
also	O
praised	O
the	O
game	O
's	O
story	O
,	O
for	O
its	O
accessibility	O
as	O
a	O
result	O
of	O
being	O
a	O
prequel	B-Application
,	O
or	O
that	O
it	O
did	O
not	O
bear	O
elements	O
from	O
previous	O
games	O
that	O
tended	O
to	O
confuse	O
gamers	O
such	O
as	O
the	O
characters	O
 '	O
identities	O
.	O
</s>
<s>
Although	O
the	O
lack	O
of	O
Final	B-Application
Fantasy	I-Application
characters	O
received	O
mixed	O
opinions	O
,	O
PSM	O
thought	O
that	O
it	O
helped	O
to	O
expand	O
the	O
exploration	O
of	O
Disney	O
worlds	O
,	O
while	O
Zack	O
's	O
role	O
was	O
found	O
suitable	O
by	O
GameZone	O
.	O
</s>
<s>
The	O
English	O
casting	O
for	O
Birth	B-Application
by	I-Application
Sleep	I-Application
also	O
received	O
positive	O
comments	O
with	O
GameTrailers	O
stating	O
that	O
it	O
"	O
features	O
one	O
of	O
the	O
few	O
good	O
English	O
dubs	O
in	O
recent	O
memory	O
"	O
,	O
particularly	O
Leonard	O
Nimoy	O
's	O
performance	O
.	O
</s>
<s>
IGN	O
featured	O
the	O
game	O
in	O
their	O
"	O
Game	O
of	O
the	O
Month	O
"	O
article	O
series	O
for	O
September	O
2010	O
in	O
the	O
PSP	B-Operating_System
category	O
.	O
</s>
<s>
The	O
game	O
has	O
been	O
listed	O
as	O
one	O
of	O
the	O
best	O
PlayStation	B-Operating_System
Portable	I-Operating_System
titles	O
with	O
GamesRadar	O
placing	O
it	O
sixth	O
and	O
IGN	O
eighteenth	O
.	O
</s>
<s>
Kingdom	B-Application
Hearts	I-Application
Birth	I-Application
by	I-Application
Sleep	I-Application
was	O
also	O
released	O
with	O
a	O
limited	O
edition	O
PSP-3000	O
as	O
a	O
bundle	O
in	O
Japan	O
featuring	O
designs	O
from	O
the	O
Kingdom	B-Application
Hearts	I-Application
series	O
on	O
its	O
back	O
.	O
</s>
<s>
A	O
new	O
boss	O
known	O
only	O
as	O
the	O
Unknown	O
appears	O
in	O
the	O
overseas	O
versions	O
,	O
as	O
well	O
as	O
a	O
new	O
gameplay	O
element	O
called	O
"	O
Crown	O
Stickers	O
"	O
,	O
which	O
act	O
much	O
the	O
same	O
way	O
as	O
the	O
Puzzle	O
Pieces	O
from	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
Final	O
Mix	O
.	O
</s>
<s>
Like	O
previous	O
games	O
,	O
a	O
light	O
novel	O
of	O
Birth	B-Application
by	I-Application
Sleep	I-Application
has	O
been	O
written	O
by	O
Tomoko	O
Kanemaki	O
and	O
illustrated	O
by	O
Shiro	O
Amano	O
.	O
</s>
<s>
Additionally	O
,	O
the	O
tracks	O
featured	O
in	O
the	O
game	O
have	O
been	O
released	O
as	O
part	O
of	O
a	O
three-disc	O
album	O
which	O
includes	O
the	O
soundtracks	O
from	O
Birth	B-Application
by	I-Application
Sleep	I-Application
,	O
358/2	B-Application
Days	I-Application
and	O
coded	O
.	O
</s>
<s>
In	O
early	O
2010	O
,	O
Nomura	O
was	O
asked	O
in	O
an	O
interview	O
if	O
Square	O
Enix	O
would	O
release	O
an	O
international	O
Final	O
Mix	O
of	O
Kingdom	B-Application
Hearts	I-Application
Birth	I-Application
by	I-Application
Sleep	I-Application
,	O
to	O
which	O
he	O
replied	O
he	O
would	O
like	O
to	O
,	O
as	O
he	O
enjoyed	O
the	O
work	O
from	O
the	O
English	O
voice	O
casting	O
done	O
in	O
the	O
previous	O
games	O
.	O
</s>
<s>
However	O
,	O
he	O
stated	O
that	O
one	O
of	O
the	O
main	O
reasons	O
for	O
the	O
popularity	O
of	O
the	O
Final	O
Mix	O
version	O
of	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
was	O
because	O
it	O
was	O
released	O
alongside	O
the	O
PlayStation	B-Device
2	I-Device
remake	O
of	O
Kingdom	B-Application
Hearts	I-Application
:	O
Chain	O
of	O
Memories	O
,	O
so	O
he	O
and	O
the	O
staff	O
would	O
think	O
on	O
it	O
more	O
.	O
</s>
<s>
In	O
September	O
2010	O
,	O
Square	O
Enix	O
announced	O
that	O
Kingdom	B-Application
Hearts	I-Application
Birth	I-Application
by	I-Application
Sleep	I-Application
Final	I-Application
Mix	I-Application
would	O
be	O
released	O
on	O
January	O
20	O
,	O
2011	O
in	O
Japan	O
.	O
</s>
<s>
Alongside	O
The	B-Application
3rd	I-Application
Birthday	I-Application
,	O
Final	O
Mix	O
includes	O
a	O
code	O
that	O
allows	O
players	O
to	O
obtain	O
downloadable	O
content	O
for	O
Dissidia	B-Application
012	I-Application
Final	I-Application
Fantasy	I-Application
,	O
with	O
Final	O
Mix	O
featuring	O
the	O
character	O
Cloud	O
Strife	O
costume	O
from	O
the	O
original	O
Kingdom	B-Application
Hearts	I-Application
.	O
</s>
<s>
Final	O
Mix	O
was	O
released	O
for	O
the	O
first	O
time	O
outside	O
Japan	O
as	O
part	O
of	O
Kingdom	B-Application
Hearts	I-Application
HD	I-Application
2.5	I-Application
Remix	I-Application
.	O
</s>
<s>
In	O
the	O
credits	O
of	O
Kingdom	B-Application
Hearts	I-Application
HD	I-Application
1.5	I-Application
Remix	I-Application
,	O
clips	O
of	O
Kingdom	B-Application
Hearts	I-Application
Birth	I-Application
by	I-Application
Sleep	I-Application
Final	I-Application
Mix	I-Application
were	O
shown	O
,	O
hinting	O
at	O
its	O
inclusion	O
in	O
another	O
collection	O
.	O
</s>
<s>
On	O
October	O
14	O
,	O
2013	O
,	O
Square	O
Enix	O
announced	O
Kingdom	B-Application
Hearts	I-Application
HD	I-Application
2.5	I-Application
Remix	I-Application
,	O
a	O
second	O
compilation	O
exclusively	O
for	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
after	O
HD	B-Application
1.5	I-Application
Remix	I-Application
.	O
</s>
<s>
The	O
release	O
includes	O
both	O
Kingdom	B-Application
Hearts	I-Application
II	I-Application
Final	O
Mix	O
and	O
Kingdom	B-Application
Hearts	I-Application
Birth	I-Application
by	I-Application
Sleep	I-Application
Final	I-Application
Mix	I-Application
in	O
HD	O
with	O
trophy	O
support	O
.	O
</s>
<s>
Additionally	O
,	O
the	O
collection	O
includes	O
HD	O
cinematic	O
scenes	O
from	O
Kingdom	B-Application
Hearts	I-Application
Re:coded	O
.	O
</s>
<s>
In	O
September	O
2015	O
,	O
Square	O
Enix	O
announced	O
Kingdom	B-Application
Hearts	I-Application
HD	I-Application
2.8	I-Application
Final	I-Application
Chapter	I-Application
Prologue	I-Application
.	O
</s>
<s>
The	O
collection	O
features	O
Kingdom	B-Application
Hearts	I-Application
0.2	O
:	O
Birth	B-Application
by	I-Application
Sleep	I-Application
–	O
A	O
Fragmentary	O
Passage	O
,	O
a	O
new	O
game	O
taking	O
place	O
after	O
the	O
events	O
of	O
the	O
original	O
Birth	B-Application
by	I-Application
Sleep	I-Application
,	O
told	O
from	O
the	O
perspective	O
of	O
Aqua	O
.	O
</s>
<s>
The	O
collection	O
also	O
features	O
an	O
HD	O
remaster	O
of	O
Kingdom	B-Application
Hearts	I-Application
3D	I-Application
:	I-Application
Dream	I-Application
Drop	I-Application
Distance	I-Application
as	O
well	O
as	O
Kingdom	B-Application
Hearts	I-Application
χ	I-Application
Back	O
Cover	O
,	O
a	O
cinematic	O
retelling	O
of	O
Kingdom	B-Application
Hearts	I-Application
χ	I-Application
that	O
reveals	O
new	O
parts	O
of	O
the	O
series	O
 '	O
history	O
.	O
</s>
