<s>
Grey	B-Device
Seas	I-Device
,	I-Device
Grey	I-Device
Skies	I-Device
is	O
a	O
1983	O
video	O
game	O
published	O
by	O
Simulations	O
Canada	O
.	O
</s>
<s>
Grey	B-Device
Seas	I-Device
,	I-Device
Grey	I-Device
Skies	I-Device
is	O
a	O
game	O
in	O
which	O
tactical	O
engagements	O
are	O
simulated	O
between	O
forces	O
composed	O
of	O
surface	O
units	O
and	O
submarine	O
units	O
.	O
</s>
<s>
Jay	O
Selover	O
reviewed	O
Grey	B-Device
Seas	I-Device
,	I-Device
Grey	I-Device
Skies	I-Device
and	O
Fall	B-Application
Gelb	I-Application
for	O
Computer	O
Gaming	O
World	O
,	O
and	O
stated	O
that	O
"	O
Both	O
games	O
are	O
good	O
simulations	O
,	O
and	O
appear	O
to	O
be	O
built	O
on	O
well	O
researched	O
data	O
bases	O
.	O
</s>
