<s>
The	B-Device
Legend	I-Device
of	I-Device
Blacksilver	I-Device
is	O
a	O
fantasy	B-Application
role-playing	O
video	O
game	O
developed	O
by	O
Charles	O
W	O
.	O
Dougherty	O
and	O
John	O
C	O
.	O
Dougherty	O
of	O
Quest	O
,	O
Inc	O
.	O
and	O
published	O
by	O
Epyx	O
in	O
1988	O
.	O
</s>
<s>
It	O
is	O
an	O
indirect	O
sequel	O
to	O
the	O
game	O
Legacy	B-Application
of	I-Application
the	I-Application
Ancients	I-Application
.	O
</s>
<s>
Originally	O
designed	O
for	O
the	O
Commodore	O
64	O
,	O
the	O
game	O
was	O
ported	O
to	O
the	O
Apple	B-Device
II	I-Device
.	O
</s>
<s>
The	B-Device
Legend	I-Device
of	I-Device
Blacksilver	I-Device
uses	O
an	O
improved	O
version	O
of	O
the	O
game	O
engine	O
used	O
in	O
its	O
predecessor	O
,	O
Legacy	B-Application
of	I-Application
the	I-Application
Ancients	I-Application
,	O
which	O
in	O
turn	O
was	O
loosely	O
based	O
on	O
the	O
engine	O
used	O
in	O
the	O
Questron	B-Application
series	O
.	O
</s>
<s>
The	O
game	O
is	O
written	O
in	O
BASIC	O
supplemented	O
with	O
a	O
few	O
disk	O
,	O
sound	O
,	O
and	O
graphics	O
routines	O
coded	O
in	O
machine	B-Language
language	I-Language
for	O
speed	O
.	O
</s>
