<s>
Zzoom	B-Device
is	O
a	O
computer	O
game	O
developed	O
by	O
John	O
Gibson	O
,	O
Mark	O
Butler	O
and	O
Steve	O
Blower	O
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
and	O
released	O
by	O
Imagine	O
Software	O
in	O
1983	O
.	O
</s>
<s>
The	O
player	O
's	O
view	O
consists	O
of	O
a	O
crosshairs	O
upon	O
a	O
simple	O
ground	O
and	O
sky	O
horizon	O
,	O
with	O
an	O
altimeter	O
,	O
a	O
shield	O
indicator	O
and	O
a	O
radar	B-Application
.	O
</s>
<s>
Zzoom	B-Device
was	O
received	O
well	O
by	O
the	O
video	O
game	O
press	O
when	O
it	O
was	O
released	O
in	O
1983	O
,	O
and	O
it	O
remained	O
among	O
the	O
top	O
twenty	O
best-selling	O
games	O
well	O
into	O
1984	O
.	O
</s>
