<s>
is	O
an	O
action-adventure	O
stealth	O
video	O
game	O
series	O
,	O
originally	O
developed	O
by	O
Japanese	O
developer	O
Acquire	O
,	O
where	O
the	O
player	O
assumes	O
the	O
role	O
of	O
a	O
ninja	B-Application
in	O
16th-century	O
Japan	O
.	O
</s>
<s>
The	O
title	O
in	O
Japanese	O
literally	O
translates	O
in	O
English	O
as	O
"	O
Divine	O
Retribution	O
"	O
,	O
with	O
天	O
(	O
ten	O
)	O
meaning	O
heaven	O
and	O
誅	O
(	O
chū	O
)	O
meaning	O
death	O
penalty	O
(	O
another	O
translation	O
of	O
this	O
phrase	O
,	O
Wrath	O
of	O
Heaven	O
,	O
is	O
the	O
title	O
of	O
the	O
first	O
PlayStation	B-Device
2	I-Device
entry	O
in	O
the	O
series	O
)	O
.	O
</s>
<s>
The	O
original	O
story	O
(	O
Stealth	O
Assassins	O
)	O
revolves	O
around	O
two	O
ninjas	B-Application
,	O
Rikimaru	O
and	O
Ayame	O
,	O
who	O
have	O
both	O
been	O
members	O
of	O
the	O
Azuma	O
Ninja	B-Application
Clan	O
since	O
childhood	O
.	O
</s>
<s>
The	O
two	O
ninjas	B-Application
serve	O
the	O
benevolent	O
Lord	O
Gohda	O
and	O
work	O
for	O
him	O
as	O
his	O
secret	O
spies	O
to	O
root	O
out	O
corruption	O
and	O
gather	O
intelligence	O
in	O
his	O
province	O
.	O
</s>
<s>
However	O
,	O
the	O
evil	O
demonic	O
sorcerer	O
Lord	B-Application
Mei-Oh	I-Application
sought	O
to	O
destroy	O
Lord	O
Gohda	O
,	O
and	O
using	O
his	O
demon	O
warrior	O
Onikage	O
,	O
wreaked	O
havoc	O
throughout	O
Lord	O
Gohda	O
's	O
province	O
.	O
</s>
<s>
Although	O
Lord	B-Application
Mei-Oh	I-Application
was	O
killed	O
in	O
the	O
first	O
game	O
,	O
Onikage	O
appeared	O
in	O
all	O
subsequent	O
games	O
(	O
except	O
Fatal	O
Shadows	O
and	O
Tenchu	B-Application
Z	I-Application
)	O
as	O
the	O
archenemy	O
of	O
the	O
two	O
ninja	B-Application
,	O
especially	O
Rikimaru	O
.	O
</s>
<s>
There	O
are	O
numerous	O
items	O
to	O
help	O
the	O
ninja	B-Application
on	O
his/her	O
mission	O
,	O
but	O
unlockable	O
items	O
can	O
be	O
acquired	O
if	O
the	O
player	O
gets	O
a	O
"	O
Grand	O
Master	O
"	O
rating	O
at	O
the	O
end	O
of	O
the	O
level	O
by	O
being	O
as	O
stealthy	O
as	O
possible	O
.	O
</s>
<s>
Items	O
and	O
controls	O
vary	O
from	O
game	O
to	O
game	O
,	O
but	O
the	O
gameplay	O
is	O
essentially	O
the	O
same	O
throughout	O
except	O
Tenchu	B-Application
:	I-Application
Shadow	I-Application
Assassins	I-Application
.	O
</s>
<s>
The	O
main	O
characters	O
of	O
the	O
Tenchu	B-Application
series	O
are	O
Rikimaru	O
,	O
Ayame	O
,	O
Tesshu	O
and	O
Rin	O
.	O
</s>
<s>
Rikimaru	O
is	O
a	O
tall	O
,	O
white-haired	O
shinobi	B-Application
with	O
a	O
single	O
ninjatō	O
named	O
"	O
Izayoi	O
"	O
and	O
a	O
scar	O
over	O
his	O
right	O
eye	O
.	O
</s>
<s>
Ayame	O
is	O
a	O
kunoichi	B-Application
(	O
female	O
ninja	B-Application
)	O
who	O
wears	O
standard	O
ninja	B-Application
clothes	O
with	O
her	O
midriff	O
exposed	O
and	O
carries	O
a	O
pair	O
of	O
kodachi	O
.	O
</s>
<s>
Rin	O
is	O
a	O
young	O
kunoichi	B-Application
who	O
carries	O
a	O
large	O
katana	O
called	O
Natsume	O
.	O
</s>
<s>
There	O
is	O
an	O
additional	O
Japan-exclusive	O
release	O
for	O
Tenchu	B-Application
on	O
the	O
PlayStation	B-Device
.	O
</s>
<s>
One	O
hundred	O
of	O
the	O
best	O
competing	O
levels	O
designed	O
with	O
the	O
level	O
editor	O
of	O
Tenchu	B-Application
:	O
Shinobi	B-Application
Gaisen	O
(	O
an	O
expanded	O
version	O
of	O
Tenchu	B-Application
re-released	O
in	O
Japan	O
)	O
were	O
put	O
together	O
to	O
form	O
a	O
stand-alone	O
,	O
non-story	O
based	O
expansion	O
set	O
called	O
Tenchu	B-Application
:	O
Shinobi	B-Application
Hyakusen	O
.	O
</s>
<s>
Shinobi	B-Application
Hyakusen	O
is	O
famous	O
for	O
the	O
hardest	O
level	O
settings	O
among	O
Tenchu	B-Application
fans	O
,	O
especially	O
because	O
of	O
the	O
tight	O
time	O
limits	O
and	O
the	O
overall	O
lack	O
of	O
the	O
items	O
,	O
excluding	O
the	O
caltrops	O
and	O
the	O
throwing	O
stars	O
.	O
</s>
<s>
These	O
include	O
Tenchu	B-Application
:	O
Ayame	O
's	O
Tale	O
3D	O
which	O
was	O
released	O
for	O
the	O
Sony	O
Ericsson	O
mobile	O
phone	O
series	O
and	O
Tenchu	B-Application
:	I-Application
Wrath	I-Application
of	I-Application
Heaven	I-Application
by	O
TKO-Software	O
and	O
Digital	O
Bridges	O
which	O
was	O
released	O
for	O
mobile	O
phones	O
in	O
2005	O
,	O
although	O
it	O
used	O
two-dimensional	O
graphics	O
.	O
</s>
<s>
A	O
stage	O
play	O
adaptation	O
Tenchu	B-Application
Butai	O
was	O
performed	O
in	O
2014	O
.	O
</s>
