<s>
Koronis	B-Application
Rift	I-Application
is	O
a	O
1985	B-Application
computer	O
game	O
from	O
Lucasfilm	O
Games	O
.	O
</s>
<s>
Originally	O
developed	O
for	O
the	O
Atari	B-Device
8-bit	I-Device
family	I-Device
and	O
the	O
Commodore	O
64	O
,	O
Koronis	B-Application
Rift	I-Application
was	O
ported	O
to	O
the	O
Amstrad	B-Device
CPC	I-Device
,	O
Apple	B-Device
II	I-Device
,	O
MSX	B-Operating_System
,	O
Tandy	B-Device
Color	I-Device
Computer	I-Device
3	I-Device
,	O
and	O
ZX	B-Operating_System
Spectrum	I-Operating_System
.	O
</s>
<s>
The	O
Atari	O
version	O
required	O
computers	O
with	O
the	O
GTIA	B-General_Concept
chip	O
installed	O
in	O
order	O
to	O
display	O
properly	O
.	O
</s>
<s>
Koronis	B-Application
Rift	I-Application
was	O
one	O
of	O
two	O
games	O
in	O
Lucasfilm	O
Games	O
 '	O
second	O
wave	O
(	O
December	O
1985	B-Application
)	O
.	O
</s>
<s>
The	O
other	O
was	O
The	B-Application
Eidolon	I-Application
.	O
</s>
<s>
Both	O
enhanced	O
the	O
fractal	B-Application
technology	O
developed	O
for	O
Rescue	B-Application
on	I-Application
Fractalus	I-Application
!	I-Application
.	O
</s>
<s>
In	O
Koronis	B-Application
Rift	I-Application
,	O
the	O
Atari	B-Device
8-bit	I-Device
family	I-Device
's	O
additional	O
colors	O
(	O
over	O
those	O
of	O
the	O
Commodore	O
64	O
)	O
allowed	O
the	O
programmers	O
to	O
gradually	O
fade	O
in	O
the	O
background	O
rather	O
than	O
it	O
suddenly	O
popping	O
in	O
as	O
in	O
Rescue	O
,	O
an	O
early	O
example	O
of	O
depth	O
cueing	O
in	O
a	O
computer	O
game	O
.	O
</s>
<s>
The	O
player	O
controls	O
a	O
surface	O
rover	O
vehicle	O
to	O
enter	O
several	O
"	O
rifts	O
"	O
on	O
an	O
alien	O
planet	O
which	O
are	O
effectively	O
fractal	B-Application
mazes	O
.	O
</s>
<s>
Info	O
rated	O
Koronis	B-Application
Rift	I-Application
four	O
stars	O
out	O
of	O
five	O
,	O
stating	O
that	O
it	O
was	O
the	O
best	O
of	O
Epyx	O
's	O
four	O
Lucasfilm	O
games	O
.	O
</s>
<s>
Zzap	O
!	O
64	O
thought	O
that	O
the	O
game	O
was	O
an	O
improvement	O
on	O
its	O
predecessor	O
,	O
Rescue	B-Application
on	I-Application
Fractalus	I-Application
,	O
with	O
superior	O
graphics	O
and	O
gameplay	O
.	O
</s>
