<s>
Samurai	B-Application
Warriors	I-Application
4	I-Application
,	O
known	O
in	O
Japan	O
as	O
,	O
is	O
a	O
hack	B-Application
and	I-Application
slash	I-Application
game	O
by	O
Koei	O
Tecmo	O
,	O
and	O
sequel	O
to	O
Samurai	B-Application
Warriors	I-Application
3	I-Application
.	O
</s>
<s>
Unlike	O
past	O
Samurai	B-Application
Warriors	I-Application
games	O
,	O
this	O
one	O
only	O
has	O
Japanese	O
voice	O
overs	O
.	O
</s>
<s>
A	O
reboot	O
of	O
the	O
series	O
titled	O
Samurai	B-Application
Warriors	I-Application
5	I-Application
was	O
released	O
in	O
June	O
2021	O
.	O
</s>
<s>
While	O
the	O
game	O
was	O
confirmed	O
to	O
be	O
in	O
development	O
for	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
as	O
early	O
as	O
2012	O
,	O
it	O
was	O
not	O
until	O
the	O
SCEJA	O
Press	O
Conference	O
in	O
September	O
2013	O
that	O
the	O
game	O
was	O
officially	O
announced	O
,	O
with	O
a	O
version	O
for	O
PlayStation	B-Device
Vita	I-Device
in	O
addition	O
to	O
PlayStation	B-Operating_System
3	I-Operating_System
,	O
and	O
was	O
released	O
on	O
March	O
20	O
,	O
2014	O
,	O
in	O
Japan	O
.	O
</s>
<s>
The	O
first	O
promo	O
of	O
Samurai	B-Application
Warriors	I-Application
4	I-Application
was	O
revealed	O
on	O
December	O
7	O
,	O
2013	O
.	O
</s>
<s>
The	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
version	O
port	O
followed	O
on	O
September	O
4	O
,	O
2014	O
.	O
</s>
<s>
A	O
revised	O
version	O
,	O
was	O
released	O
on	O
February	O
11	O
,	O
2015	O
,	O
in	O
Japan	O
and	O
was	O
released	O
in	O
North	O
America	O
on	O
September	O
29	O
,	O
2015	O
,	O
and	O
in	O
Europe	O
on	O
October	O
2	O
,	O
2015	O
,	O
but	O
it	O
does	O
not	O
contain	O
the	O
original	O
stories	O
from	O
Samurai	B-Application
Warriors	I-Application
4	I-Application
.	O
</s>
<s>
The	O
game	O
features	O
character-switching	O
,	O
similar	O
to	O
the	O
spin-off	O
,	O
Samurai	B-Device
Warriors	I-Device
:	I-Device
Chronicles	I-Device
,	O
with	O
which	O
players	O
can	O
take	O
two	O
characters	O
into	O
battles	O
simultaneously	O
,	O
and	O
freely	O
switch	O
between	O
the	O
two	O
.	O
</s>
<s>
The	O
create-a-warrior	O
mode	O
is	O
retained	O
;	O
it	O
features	O
much	O
more	O
expansive	O
content	O
,	O
including	O
the	O
addition	O
of	O
two	O
weapon	O
movesets	O
from	O
the	O
male	O
and	O
female	O
protagonists	O
from	O
Samurai	B-Device
Warriors	I-Device
:	I-Device
Chronicles	I-Device
in	O
addition	O
to	O
the	O
three	O
from	O
previous	O
games	O
.	O
</s>
<s>
Story	O
Mode	O
is	O
also	O
revamped	O
;	O
it	O
no	O
longer	O
uses	O
the	O
traditional	O
story-per-character	O
format	O
from	O
previous	O
games	O
and	O
instead	O
feature	O
ten	O
stories	O
based	O
on	O
clans	O
and	O
regions	O
during	O
the	O
Sengoku	O
period	O
,	O
akin	O
to	O
the	O
kingdom-based	O
story	O
mode	O
implemented	O
in	O
the	O
recent	O
Dynasty	B-Application
Warriors	I-Application
games	O
.	O
</s>
<s>
Like	O
previous	O
games	O
in	O
the	O
series	O
,	O
the	O
setting	O
and	O
story	O
of	O
Samurai	B-Application
Warriors	I-Application
4	I-Application
are	O
centered	O
on	O
the	O
Sengoku	O
period	O
of	O
Japan	O
,	O
a	O
period	O
of	O
much	O
military	O
conflict	O
and	O
political	O
warfare	O
in	O
which	O
Japan	O
was	O
divided	O
between	O
regions	O
ruled	O
by	O
daimyō	O
that	O
lasted	O
from	O
the	O
middle	O
of	O
the	O
16th	O
century	O
to	O
the	O
early	O
17th	O
century	O
.	O
</s>
<s>
Virtually	O
all	O
characters	O
from	O
previous	O
games	O
return	O
,	O
including	O
three	O
characters	O
(	O
Goemon	O
Ishikawa	O
,	O
Kojirō	O
Sasaki	O
,	O
and	O
Musashi	O
Miyamoto	O
)	O
that	O
were	O
cut	O
from	O
the	O
main	O
series	O
in	O
Samurai	B-Application
Warriors	I-Application
3	I-Application
(	O
in	O
Samurai	B-Application
Warriors	I-Application
2	I-Application
for	O
Goemon	O
)	O
.	O
</s>
<s>
The	O
game	O
has	O
received	O
positive	O
reviews	O
,	O
at	O
the	O
time	O
becoming	O
the	O
highest	O
rated	O
entry	O
in	O
the	O
series	O
(	O
until	O
the	O
release	O
of	O
Samurai	B-Application
Warriors	I-Application
5	I-Application
in	O
2021	O
)	O
.	O
</s>
<s>
with	O
Famitsu	O
giving	O
a	O
score	O
of	O
34	O
out	O
of	O
40	O
in	O
both	O
PlayStation	B-Operating_System
3	I-Operating_System
and	O
PlayStation	B-Device
Vita	I-Device
versions	O
.	O
</s>
<s>
Samurai	O
Warriors	O
4-IISamurai	O
Warriors	O
4-II	O
has	O
received	O
average	O
reception	O
,	O
scoring	O
73	O
out	O
of	O
100	O
for	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
version	O
on	O
Metacritic	O
.	O
</s>
<s>
During	O
the	O
debut	O
week	O
of	O
the	O
release	O
in	O
Japan	O
,	O
the	O
updated	O
version	O
of	O
the	O
original	O
games	O
has	O
sold	O
44,574	O
units	O
on	O
PS3	B-Operating_System
,	O
23,519	O
units	O
on	O
PS	B-Device
Vita	I-Device
and	O
22,468	O
units	O
on	O
PS4	B-Operating_System
.	O
</s>
<s>
Derby	O
Musō	O
reuses	O
assets	O
from	O
Samurai	B-Application
Warriors	I-Application
4	I-Application
to	O
create	O
a	O
horse	O
racing	O
game	O
,	O
like	O
that	O
of	O
the	O
Winning	B-Application
Post	I-Application
series	O
,	O
with	O
famous	O
Japanese	O
racehorses	O
.	O
</s>
<s>
Eight	O
characters	O
from	O
Samurai	B-Application
Warriors	I-Application
4	I-Application
make	O
up	O
the	O
playable	O
cast	O
,	O
plus	O
Matthew	O
C	O
.	O
Perry	O
(	O
known	O
in-game	O
as	O
just	O
Perry	O
)	O
.	O
</s>
<s>
Dream	O
Castle	O
Mode	O
,	O
first	O
introduced	O
in	O
Samurai	B-Device
Warriors	I-Device
:	I-Device
Chronicles	I-Device
3	O
is	O
also	O
present	O
in	O
the	O
game	O
.	O
</s>
<s>
A	O
second	O
expansion	O
,	O
was	O
released	O
in	O
Japan	O
on	O
September	O
17	O
,	O
2015	O
,	O
for	O
the	B-Operating_System
PS3	I-Operating_System
,	O
PS4	B-Operating_System
,	O
and	O
PS	B-Device
Vita	I-Device
,	O
with	O
a	O
release	O
in	O
North	O
America	O
and	O
Europe	O
in	O
2016	O
.	O
</s>
<s>
Featuring	O
more	O
than	O
100	O
generic	O
officers	O
,	O
including	O
female	O
officers	O
,	O
it	O
incorporates	O
the	O
marriage	O
system	O
for	O
the	O
first	O
time	O
,	O
which	O
sister	O
series	O
Dynasty	B-Application
Warriors	I-Application
had	O
also	O
implemented	O
in	O
their	O
Empires	O
expansions	O
.	O
</s>
<s>
On	O
December	O
3	O
,	O
2018	O
,	O
Koei	O
announced	O
for	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
and	O
Nintendo	B-Application
Switch	I-Application
.	O
</s>
<s>
It	O
is	O
based	O
on	O
an	O
early	O
battle	O
in	O
the	O
game	O
,	O
namely	O
,	O
the	O
siege	O
of	O
Ueda	O
castle	O
between	O
the	O
Sanada	O
clan	O
and	O
the	O
Tokugawa	O
clan	O
,	O
featuring	O
Yukimura	O
Sanada	O
and	O
Nobuyuki	O
Sanada	O
as	O
the	O
main	O
characters	O
,	O
and	O
Tadakatsu	O
Honda	O
,	O
Mitsunari	O
Ishida	O
,	O
Kanetsugu	O
Naoe	O
,	O
Kunoichi	B-Application
,	O
Ina	O
,	O
and	O
Ieyasu	O
Tokugawa	O
in	O
supporting	O
roles	O
.	O
</s>
