<s>
is	O
a	O
side-scrolling	O
hack	B-Application
and	I-Application
slash	I-Application
platform	O
game	O
released	O
for	O
the	O
arcades	O
by	O
Data	O
East	O
in	O
1987	O
.	O
</s>
<s>
A	O
young	O
sailor	O
and	O
former	O
first	O
mate	O
named	O
Jim	O
Aykroyd	O
(	O
Jack	O
Avery	O
in	O
US	O
)	O
who	O
goes	O
on	O
a	O
journey	O
to	O
seek	O
the	O
lost	O
treasure	O
of	O
Captain	B-Application
Silver	I-Application
,	O
facing	O
various	O
perils	O
along	O
the	O
way	O
.	O
</s>
<s>
If	O
the	O
player	O
collects	O
the	O
required	O
letters	O
needed	O
to	O
fill	O
out	O
the	O
"	O
CAPTAIN	B-Application
SILVER	I-Application
"	O
gauge	O
at	O
the	O
bottom	O
of	O
the	O
screen	O
,	O
an	O
extra	O
life	O
is	O
obtained	O
.	O
</s>
<s>
Scene	O
3	O
ends	O
with	O
a	O
final	O
battle	O
against	O
the	O
skeletal	O
being	O
of	O
Captain	B-Application
Silver	I-Application
.	O
</s>
<s>
Two	O
versions	O
of	O
the	O
game	O
were	O
produced	O
,	O
a	O
1-Megabit	O
cartridge	B-Protocol
for	O
the	O
North	O
American	O
market	O
and	O
a	O
2-Megabit	O
cartridge	B-Protocol
for	O
Japan	O
and	O
Europe	O
.	O
</s>
<s>
The	O
play	O
mechanics	O
in	O
the	O
Master	O
System	O
version	O
is	O
roughly	O
identical	O
to	O
the	O
arcade	B-Application
game	O
and	O
most	O
of	O
the	O
power-ups	O
and	O
bonus	O
items	O
are	O
retained	O
,	O
the	O
player	O
can	O
only	O
increase	O
magic	O
power	O
by	O
up	O
to	O
three	O
levels	O
instead	O
of	O
six	O
,	O
the	O
longsword	O
power-up	O
is	O
removed	O
,	O
boots	O
cannot	O
be	O
worn	O
permanently	O
.	O
</s>
<s>
The	O
American	O
version	O
only	O
features	O
four	O
stages	O
roughly	O
based	O
on	O
the	O
ones	O
in	O
the	O
arcade	B-Application
version	O
(	O
a	O
town	O
,	O
a	O
ship	O
,	O
an	O
island	O
,	O
and	O
a	O
mountain	O
)	O
and	O
only	O
two	O
bosses	O
(	O
Captain	O
Coppard	O
and	O
Captain	B-Application
Silver	I-Application
)	O
.	O
</s>
<s>
This	O
version	O
features	O
several	O
substantial	O
differences	O
from	O
the	O
arcade	B-Application
version	O
.	O
</s>
<s>
The	O
stages	O
are	O
different	O
and	O
the	O
bosses	O
include	O
new	O
foes	O
such	O
as	O
Frankenstein	B-Application
's	I-Application
monster	I-Application
and	O
a	O
giant	O
octopus	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
Captain	B-Application
Silver	I-Application
on	O
their	O
September	O
1	O
,	O
1987	O
issue	O
as	O
being	O
the	O
fourteenth	O
most-successful	O
table	O
arcade	B-Application
unit	O
of	O
the	O
month	O
.	O
</s>
