<s>
Shadow	B-Application
Knights	I-Application
-	O
The	O
Shogun	O
of	O
Death	O
(	O
Also	O
known	O
as	O
"	O
Budo	O
-	O
The	O
Art	O
of	O
Ninja	O
Combat	O
"	O
)	O
is	O
a	O
platform	O
game	O
created	O
by	O
id	O
Software	O
and	O
published	O
by	O
Softdisk	O
in	O
1991	B-Application
.	O
</s>
<s>
Shadow	B-Application
Knights	I-Application
was	O
the	O
first	O
game	O
created	O
for	O
Softdisk	O
,	O
who	O
paid	O
$5000	O
for	O
it	O
as	O
part	O
of	O
id	O
Software	O
's	O
contractual	O
obligation	O
to	O
them	O
.	O
</s>
<s>
Shadow	B-Application
Knights	I-Application
was	O
also	O
marketed	O
by	O
Softdisk	O
as	O
part	O
of	O
"	O
The	O
Lost	O
Game	O
Collection	O
of	O
ID	O
Software	O
"	O
.	O
</s>
<s>
Shadow	B-Application
Knights	I-Application
is	O
a	O
basic	O
platform	O
game	O
with	O
many	O
element	O
similar	O
to	O
the	O
NES	O
Ninja	B-Application
Gaiden	I-Application
games	O
.	O
</s>
<s>
Development	O
for	O
Shadow	B-Application
Knights	I-Application
was	O
being	O
done	O
in	O
conjunction	O
with	O
Slordax	B-Application
:	I-Application
The	I-Application
Unknown	I-Application
Enemy	I-Application
around	O
1990	O
.	O
</s>
<s>
At	O
the	O
time	O
Commander	B-Application
Keen	I-Application
in	I-Application
Invasion	I-Application
of	I-Application
the	I-Application
Vorticons	I-Application
was	O
in	O
development	O
outside	O
working	O
hours	O
with	O
Softdisk	O
.	O
</s>
<s>
The	O
game	O
engine	O
that	O
was	O
built	O
would	O
soon	O
be	O
reused	O
for	O
Dangerous	B-Language
Dave	I-Language
in	I-Language
the	I-Language
Haunted	I-Language
Mansion	I-Language
.	O
</s>
