<s>
Revolution	O
is	O
an	O
isometric	O
3D	O
puzzle	O
video	O
game	O
released	O
by	O
U.S.	O
Gold	O
in	O
1986	B-Application
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
and	O
Amstrad	B-Device
CPC	I-Device
.	O
</s>
<s>
It	O
was	O
programmed	O
by	O
Costa	O
Panayi	O
and	O
is	O
a	O
development	O
of	O
the	O
earlier	O
3D	O
games	O
Highway	B-Application
Encounter	I-Application
and	O
Alien	B-Application
Highway	I-Application
.	O
</s>
<s>
The	O
player	O
controls	O
a	O
bouncing	B-Application
ball	I-Application
on	O
a	O
series	O
of	O
superimposed	O
levels	O
,	O
each	O
consisting	O
of	O
an	O
array	O
of	O
square	O
tiles	O
,	O
on	O
which	O
are	O
arranged	O
a	O
number	O
of	O
puzzles	O
.	O
</s>
<s>
ALIEN	B-Application
HIGHWAY	I-Application
,	O
the	O
remix	O
of	O
HIGHWAY	B-Application
ENCOUNTER	I-Application
started	O
us	O
thinking	O
that	O
way	O
,	O
and	O
with	O
REVOLUTION	O
I	O
think	O
the	O
changes	O
in	O
the	O
puzzle	O
and	O
landscapes	O
are	O
the	O
main	O
attraction	O
.	O
</s>
