<s>
is	O
a	O
1991	O
shoot'em-up	O
video	O
game	O
developed	O
by	O
Sigma	O
Pro-Tech	O
and	O
published	O
by	O
Vic	O
Tokai	O
in	O
1991	O
for	O
the	O
Nintendo	B-Device
Game	I-Device
Boy	I-Device
.	O
</s>
<s>
The	O
Intergalactic	O
Council	O
has	O
sent	O
in	O
a	O
lone	O
fighter	O
called	O
Aerostar	B-Application
to	O
defend	O
the	O
Earth	O
from	O
a	O
second	O
act	O
of	O
total	O
destruction	O
.	O
</s>
