<s>
Aliens	O
who	O
rule	O
the	O
planet	O
Neptune	B-Application
realize	O
that	O
they	O
have	O
run	O
out	O
of	O
their	O
primary	O
source	O
of	O
nutrition	O
,	O
"	O
man-ham	O
livestock	O
,	O
"	O
and	O
decide	O
to	O
invade	O
Earth	O
to	O
feed	O
off	O
the	O
humans	O
.	O
</s>
<s>
The	O
General	O
of	O
the	O
Earth	O
Defense	O
Army	O
begs	O
a	O
pirate	O
called	O
Narikeen	O
to	O
strike	O
back	O
at	O
the	O
aliens	O
with	O
his	O
submarine	O
,	O
Sqoon	B-Device
.	O
</s>
<s>
The	O
player	O
is	O
given	O
Sqoon	B-Device
,	O
a	O
pink	O
submarine	O
,	O
and	O
must	O
use	O
it	O
to	O
destroy	O
the	O
aliens	O
and	O
rescue	O
captured	O
human	O
survivors	O
while	O
trying	O
to	O
avoid	O
coming	O
into	O
contact	O
with	O
enemies	O
and	O
running	O
out	O
of	O
fuel	O
.	O
</s>
<s>
To	O
accomplish	O
this	O
,	O
Sqoon	B-Device
is	O
equipped	O
with	O
missiles	O
to	O
attack	O
enemies	O
,	O
and	O
an	O
ice	O
ball	O
bomb	O
attack	O
to	O
destroy	O
facilities	O
and	O
release	O
captured	O
humans	O
.	O
</s>
<s>
When	O
Sqoon	B-Device
has	O
reached	O
its	O
maximum	O
capacity	O
of	O
nine	O
humans	O
,	O
the	O
player	O
must	O
discharge	O
survivors	O
onto	O
an	O
island	O
which	O
will	O
then	O
release	O
power-ups	O
and	O
replenish	O
fuel	O
.	O
</s>
<s>
Sqoon	B-Device
has	O
a	O
fuel	O
supply	O
which	O
must	O
be	O
replenished	O
every	O
sixty	O
seconds	O
.	O
</s>
<s>
Sqoon	B-Device
was	O
adapted	O
into	O
a	O
Manga	O
titled	O
,	O
published	O
in	O
the	O
Famitsu	O
Comics	O
collection	O
from	O
March	O
1989	O
,	O
drawn	O
by	O
Tamakichi	O
Sakura	O
.	O
</s>
