<s>
Phasor	B-Device
Zap	I-Device
is	O
a	O
game	O
for	O
the	O
Apple	B-Device
II	I-Device
family	I-Device
of	O
computers	O
,	O
created	O
in	O
1978	B-Application
by	O
programmer	O
Chris	O
Oberth	O
and	O
published	O
by	O
The	O
Elektrik	O
Keyboard	O
of	O
Chicago	O
,	O
Illinois	O
.	O
</s>
<s>
Phasor	B-Device
Zap	I-Device
presents	O
the	O
player	O
with	O
a	O
purple-tinted	O
starfield	O
that	O
represents	O
the	O
view	O
from	O
the	O
player	O
's	O
spacecraft	O
.	O
</s>
<s>
Enemy	O
spacecraft	O
appear	O
from	O
the	O
edges	O
of	O
the	O
screen	O
and	O
move	O
straight	O
across	O
it	O
,	O
and	O
it	O
's	O
up	O
to	O
the	O
player	O
to	O
use	O
to	O
the	O
paddles	B-Device
to	O
focus	O
four	O
"	O
phasor	O
"	O
beams	O
onto	O
each	O
ship	O
to	O
destroy	O
it	O
,	O
earning	O
points	O
.	O
</s>
