<s>
Zombie	B-Application
Zombie	I-Application
is	O
a	O
ZX	B-Operating_System
Spectrum	I-Operating_System
computer	O
game	O
developed	O
by	O
Spaceman	O
Ltd	O
(	O
Sandy	O
White	O
and	O
Angela	O
Sutherland	O
)	O
,	O
published	O
in	O
1984	B-Application
by	O
Quicksilva	O
.	O
</s>
<s>
It	O
is	O
a	O
development	O
of	O
Spaceman	O
's	O
previous	O
Ant	B-Application
Attack	I-Application
,	O
and	O
uses	O
an	O
updated	O
"	O
Softsolid	O
3D	O
"	O
isometric	O
graphics	O
engine	O
.	O
</s>
<s>
Zombie	B-Application
Zombie	I-Application
includes	O
a	O
helicopter	B-Application
,	O
which	O
can	O
be	O
piloted	O
and	O
used	O
to	O
alter	O
the	O
terrain	O
by	O
lifting	O
and	O
dropping	O
bricks	O
.	O
</s>
<s>
As	O
the	O
city	O
walls	O
are	O
incomplete	O
in	O
places	O
,	O
Your	O
Spectrum	O
recommended	O
that	O
the	O
player	O
's	O
first	O
action	B-Application
was	O
to	O
rebuild	O
the	O
wall	O
,	O
preventing	O
zombies	O
from	O
wandering	O
off	O
in	O
to	O
the	O
outer	O
desert	O
and	O
making	O
the	O
game	O
impossible	O
to	O
complete	O
.	O
</s>
<s>
Zombie	B-Application
Zombie	I-Application
uses	O
two-channel	O
sound	O
,	O
a	O
then	O
unheard-of	O
feat	O
of	O
a	O
computer	O
equipped	O
with	O
only	O
single-channel	O
1-bit	O
sound	O
from	O
a	O
tiny	O
speaker	O
.	O
</s>
