<s>
To	B-Application
the	I-Application
Earth	I-Application
is	O
a	O
light	O
gun	O
shooter	O
video	O
game	O
developed	O
by	O
Cirque	O
Verte	O
and	O
published	O
by	O
Nintendo	O
for	O
the	O
Nintendo	O
Entertainment	O
System	O
.	O
</s>
<s>
It	O
uses	O
the	O
NES	B-Device
Zapper	I-Device
to	O
destroy	O
ships	O
and	O
gain	O
power-ups	O
.	O
</s>
<s>
Due	O
to	O
the	O
very	O
quick	O
enemy	O
ships	O
and	O
asteroids	O
,	O
the	O
game	O
is	O
considered	O
to	O
be	O
one	O
of	O
the	O
most	O
challenging	O
NES	B-Device
Zapper	I-Device
games	O
.	O
</s>
<s>
The	O
goal	O
is	O
to	O
retrieve	O
vials	O
of	O
medicine	O
and	O
deliver	O
them	O
to	B-Application
the	I-Application
Earth	I-Application
while	O
preventing	O
Nemesis	O
from	O
passing	O
through	O
the	O
planet	O
's	O
atmosphere	O
.	O
</s>
<s>
The	O
level	O
locations	O
are	O
Uranus	O
,	O
Saturn	B-Device
,	O
Jupiter	O
,	O
and	O
Earth	O
.	O
</s>
<s>
You	O
are	O
on	O
a	O
special	O
mission	O
to	O
bring	O
the	O
antibacterial	O
agent	O
from	O
the	O
Neptune-Terrestrial	O
Allied	O
Force	O
base	O
,	O
'	O
Triton	O
 '	O
,	O
to	B-Application
the	I-Application
Earth	I-Application
.	O
</s>
