<s>
Silent	B-Application
Service	I-Application
II	I-Application
is	O
a	O
submarine	O
simulation	O
game	O
developed	O
and	O
published	O
by	O
MicroProse	O
for	O
MS-DOS	B-Application
in	O
1990	O
and	O
for	O
the	O
Amiga	B-Device
in	O
1991	O
.	O
</s>
<s>
It	O
is	O
a	O
sequel	O
to	O
1985	O
's	O
Silent	B-Device
Service	I-Device
,	O
also	O
set	O
in	O
the	O
Pacific	O
Ocean	O
during	O
World	O
War	O
II	O
.	O
</s>
<s>
Silent	B-Application
Service	I-Application
II	I-Application
allows	O
the	O
player	O
to	O
choose	O
either	O
single	O
scenarios	O
(	O
training	O
,	O
a	O
single	O
historical	O
battle	O
,	O
or	O
a	O
single	O
random	O
encounter	O
war	O
patrol	O
)	O
or	O
an	O
extended	O
war	O
career	O
.	O
</s>
<s>
Several	O
different	O
viewpoints	O
are	O
available	O
,	O
including	O
the	O
bridge	O
,	O
the	O
periscope	B-Language
(	O
usable	O
either	O
submerged	O
or	O
surfaced	O
)	O
,	O
the	O
navigation	O
area	O
with	O
the	O
map	O
,	O
and	O
internal	O
status	O
displays	O
.	O
</s>
<s>
Other	O
ships	O
are	O
displayed	O
as	O
sprites	O
in	O
the	O
bridge	O
or	O
periscope	B-Language
views	O
.	O
</s>
<s>
The	O
MS-DOS	B-Application
version	O
of	O
the	O
game	O
uses	O
up	O
to	O
256	O
colors	O
.	O
</s>
<s>
Computer	O
Gaming	O
World	O
praised	O
Silent	B-Application
Service	I-Application
II	I-Application
,	O
citing	O
its	O
excellent	O
graphics	O
,	O
"	O
amazing	O
"	O
sound	B-Device
card	I-Device
audio	O
,	O
and	O
seven	O
accurate	O
submarine	O
types	O
.	O
</s>
