<s>
Tenchu	B-Application
:	I-Application
Dark	I-Application
Secret	I-Application
is	O
an	O
action-adventure	O
stealth	O
video	O
game	O
developed	O
by	O
Polygon	O
Magic	O
and	O
published	O
by	O
FromSoftware	O
in	O
Japan	O
and	O
Nintendo	O
worldwide	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
in	O
2006	O
.	O
</s>
<s>
It	O
is	O
also	O
the	O
first	O
game	O
in	O
the	O
Tenchu	B-Application
series	I-Application
to	O
be	O
released	O
for	O
the	O
Nintendo	O
system	O
and	O
not	O
to	O
have	O
a	O
Mature	O
rating	O
from	O
the	O
ESRB	O
.	O
</s>
<s>
The	O
game	O
allows	O
players	O
to	O
choose	O
between	O
Rikimaru	O
and	O
Ayame	O
,	O
two	O
ninja	B-Application
assassins	O
sent	O
out	O
to	O
save	O
a	O
princess	O
.	O
</s>
<s>
There	O
are	O
more	O
than	O
40	O
missions	O
,	O
as	O
well	O
as	O
local	O
wireless	O
multiplayer	O
combat	O
and	O
Wi-Fi	B-Application
capabilities	I-Application
which	O
can	O
be	O
used	O
to	O
trade	O
,	O
buy	O
and	O
sell	O
items	O
around	O
the	O
world	O
.	O
</s>
<s>
Two	O
years	O
after	O
the	O
Burning	O
Dawn	O
crisis	O
,	O
Azuma	O
Clan	O
ninja	B-Application
Rikimaru	O
and	O
Ayame	O
arrive	O
at	O
the	O
small	O
frontier	O
village	O
of	O
Saiga	O
on	O
the	O
northern	O
outskirts	O
of	O
Lord	O
Matsunoshin	O
Gohda	O
’s	O
domain	O
,	O
where	O
they	O
witness	O
a	O
noblewoman	O
being	O
wounded	O
by	O
an	O
arrow	O
during	O
a	O
bandit	O
raid	O
.	O
</s>
<s>
Eventually	O
,	O
Lord	O
Hakkaku	O
’s	O
attempts	O
to	O
retrieve	O
his	O
wife	O
escalate	O
to	O
include	O
sending	O
ninja	B-Application
and	O
even	O
undead	O
creatures	O
,	O
but	O
are	O
successfully	O
rebuffed	O
by	O
Rikimaru	O
and	O
Ayame	O
.	O
</s>
<s>
After	O
Rikimaru	O
and	O
Ayame	O
defeat	O
Kurokaze	O
,	O
leader	O
of	O
the	O
Furai	O
ninja	B-Application
clan	O
in	O
service	O
of	O
Lord	O
Hakkaku	O
,	O
they	O
learn	O
that	O
Princess	O
Shizu	O
is	O
pregnant	O
.	O
</s>
<s>
Lord	O
Hakkaku	O
,	O
revealed	O
to	O
have	O
been	O
long	O
possessed	O
by	O
the	O
demon	O
Kubira	O
,	O
is	O
defeated	O
and	O
killed	O
by	O
the	O
two	O
ninja	B-Application
,	O
and	O
the	O
evil	O
entity	O
possessing	O
Princess	O
Shizu	O
is	O
exorcised	O
using	O
Izayoi	O
,	O
the	O
ancestral	O
blade	O
of	O
the	O
Azuma	O
Clan	O
.	O
</s>
<s>
Tenchu	B-Application
was	O
developed	O
by	O
Polygon	O
Magic	O
—	O
their	O
first	O
Nintendo	B-Device
DS	I-Device
game	O
—	O
and	O
published	O
by	O
From	O
Software	O
and	O
Nintendo	O
.	O
</s>
<s>
Tenchu	B-Application
was	O
released	O
exclusively	O
for	O
video	O
game	O
retailers	O
EBGames	O
and	O
GameStop	O
in	O
North	O
America	O
.	O
</s>
<s>
Tenchu	B-Application
:	I-Application
Dark	I-Application
Secret	I-Application
received	O
"	O
generally	O
unfavorable	O
"	O
reviews	O
,	O
according	O
to	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
<s>
Harris	O
added	O
that	O
the	O
game	O
did	O
not	O
use	O
its	O
3D	O
environments	O
and	O
that	O
a	O
port	O
of	O
the	O
original	O
Tenchu	B-Application
game	O
for	O
PlayStation	O
would	O
have	O
fared	O
much	O
better	O
.	O
</s>
