<s>
Highway	B-Application
Encounter	I-Application
is	O
a	O
video	O
game	O
published	O
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
,	O
Amstrad	B-Device
CPC	I-Device
,	O
MSX	B-Operating_System
,	O
Commodore	O
64	O
,	O
Sharp	B-Operating_System
MZ	I-Operating_System
,	O
and	O
Tatung	B-Operating_System
Einstein	I-Operating_System
by	O
Vortex	O
Software	O
in	O
1985	O
.	O
</s>
<s>
It	O
was	O
written	O
by	O
Costa	O
Panayi	O
who	O
also	O
coded	O
Android	B-Application
,	O
Android	B-Application
Two	I-Application
,	O
TLL	B-Application
,	O
Cyclone	B-Application
,	O
and	O
Revolution	B-Application
.	O
</s>
<s>
Highway	B-Application
Encounter	I-Application
is	O
a	O
strategy/action	O
game	O
played	O
from	O
a	O
3D	B-Application
isometric	I-Application
perspective	O
in	O
which	O
you	O
must	O
successfully	O
chaperone	O
a	O
bomb	O
along	O
a	O
long	O
,	O
straight	O
stretch	O
of	O
highway	O
and	O
into	O
the	O
alien	O
base	O
at	O
the	O
end	O
of	O
it	O
.	O
</s>
<s>
Players	O
control	O
a	O
robotic	O
"	O
Vorton	O
"	O
(	O
resembling	O
a	O
dalek	O
from	O
Doctor	O
Who	O
)	O
and	O
one	O
of	O
the	O
features	O
that	O
provides	O
Highway	B-Application
Encounter	I-Application
with	O
its	O
unique	O
appeal	O
is	O
that	O
the	O
bomb	O
is	O
constantly	O
being	O
pushed	O
onwards	O
by	O
your	O
extra	O
lives	O
-	O
four	O
more	O
Vortons	O
,	O
who	O
accompany	O
you	O
along	O
the	O
highway	O
.	O
</s>
<s>
There	O
is	O
an	O
unfinished	O
and	O
officially	O
unreleased	O
,	O
but	O
available	O
to	O
download	O
version	O
for	O
Atari	B-Device
ST	I-Device
made	O
by	O
Mark	O
Haigh-Hutchinson	O
and	O
graphics	O
by	O
Costa	O
Panayi	O
,	O
from	O
1990	O
.	O
</s>
<s>
Versions	O
for	O
Amiga	B-Device
and	O
Sega	B-Operating_System
Mega	I-Operating_System
Drive	I-Operating_System
were	O
also	O
planned	O
but	O
Hutchinson	O
stated	O
that	O
the	O
Mega	B-Operating_System
Drive	I-Operating_System
version	O
was	O
left	O
unpublished	O
.	O
</s>
<s>
Highway	B-Application
Encounter	I-Application
was	O
followed	O
by	O
a	O
sequel	O
,	O
Alien	B-Application
Highway	I-Application
,	O
in	O
1986	B-Application
.	O
</s>
