<s>
Myst	B-Application
IV	I-Application
:	I-Application
Revelation	I-Application
is	O
an	O
adventure	O
video	O
game	O
,	O
the	O
fourth	O
installment	O
in	O
the	O
Myst	B-Application
series	I-Application
,	O
developed	O
and	O
published	O
by	O
Ubisoft	O
.	O
</s>
<s>
Like	O
Myst	B-Application
III	I-Application
:	I-Application
Exile	I-Application
,	O
Revelation	O
combines	O
pre-rendered	O
graphics	O
with	O
digital	O
video	O
,	O
but	O
also	O
features	O
real-time	O
3D	O
effects	O
for	O
added	O
realism	O
.	O
</s>
<s>
The	O
plot	O
of	O
Revelation	O
follows	O
up	O
on	O
plot	O
details	O
from	O
the	O
original	O
Myst	B-Application
.	O
</s>
<s>
The	O
player	O
travels	O
to	O
each	O
brother	O
's	O
prison	O
,	O
in	O
an	O
attempt	O
to	O
recover	O
Atrus	O
 '	O
daughter	O
Yeesha	B-Application
from	O
the	O
brothers	O
 '	O
plot	O
.	O
</s>
<s>
Revelation	O
is	O
the	O
last	O
game	O
in	O
the	O
Myst	B-Application
series	I-Application
to	O
use	O
both	O
prerendered	O
backgrounds	O
and	O
full-motion	O
video	O
;	O
the	O
final	O
game	O
in	O
the	O
series	O
,	O
End	B-Application
of	I-Application
Ages	I-Application
,	O
is	O
rendered	O
in	O
real-time	O
throughout	O
.	O
</s>
<s>
Myst	B-Application
IV	I-Application
:	I-Application
Revelation	I-Application
is	O
an	O
adventure	O
game	O
with	O
puzzle	O
elements	O
.	O
</s>
<s>
Players	O
cannot	O
move	O
freely	O
across	O
each	O
Age	O
;	O
instead	O
,	O
as	O
in	O
the	O
previous	O
games	O
in	O
the	O
Myst	B-Application
series	I-Application
,	O
they	O
travel	O
by	O
clicking	O
set	O
locations	O
called	O
"	O
nodes	O
"	O
,	O
where	O
players	O
can	O
rotate	O
their	O
view	O
in	O
any	O
direction	O
.	O
</s>
<s>
Players	O
can	O
use	O
an	O
on-screen	O
journal	O
to	O
jot	O
down	O
notes	O
instead	O
of	O
having	O
to	O
write	O
down	O
clues	O
as	O
with	O
previous	O
Myst	B-Application
games	I-Application
.	O
</s>
<s>
Twenty	O
years	O
earlier	O
,	O
his	O
two	O
sons	O
,	O
Sirrus	O
and	O
Achenar	O
,	O
destroyed	O
his	O
library	O
on	O
Myst	B-Application
and	O
trapped	O
their	O
parents	O
in	O
order	O
to	O
plunder	O
the	O
wealth	O
of	O
Atrus	O
 '	O
Ages	O
.	O
</s>
<s>
After	O
being	O
knocked	O
unconscious	O
by	O
an	O
explosion	O
,	O
the	O
player	O
realizes	O
that	O
Yeesha	B-Application
,	O
Atrus	O
 '	O
daughter	O
,	O
has	O
disappeared	O
.	O
</s>
<s>
The	O
player	O
sets	O
out	O
to	O
find	O
Yeesha	B-Application
,	O
traveling	O
to	O
the	O
prison	O
Ages	O
of	O
Spire	O
and	O
Haven	O
.	O
</s>
<s>
The	O
player	O
journeys	O
to	O
the	O
Age	O
of	O
Serenia	O
and	O
encounters	O
Achenar	O
,	O
holding	O
a	O
"	O
Life	O
Stone	O
"	O
;	O
Achenar	O
tells	O
the	O
player	O
that	O
Sirrus	O
is	O
mad	O
and	O
has	O
captured	O
Yeesha	B-Application
,	O
reveals	O
that	O
he	O
kept	O
a	O
journal	O
from	O
twenty	O
years	O
earlier	O
hidden	O
on	O
the	O
island	O
,	O
and	O
warns	O
the	O
player	O
not	O
to	O
let	O
Atrus	O
come	O
after	O
them	O
.	O
</s>
<s>
Achenar	O
's	O
journal	O
reveals	O
that	O
he	O
and	O
Sirrus	O
planned	O
to	O
trap	O
their	O
mother	O
Catherine	O
on	O
Riven	B-Application
and	O
use	O
a	O
"	O
Memory	O
Chamber	O
"	O
,	O
a	O
gigantic	O
flower-like	O
structure	O
used	O
to	O
preserve	O
the	O
memories	O
of	O
the	O
dead	O
,	O
to	O
take	O
control	O
of	O
Atrus	O
 '	O
body	O
and	O
steal	O
his	O
knowledge	O
of	O
the	O
Art	O
of	O
Writing	O
.	O
</s>
<s>
Returning	O
to	O
the	O
"	O
waking	O
world	O
"	O
and	O
entering	O
the	O
old	O
Memory	O
Chamber	O
,	O
the	O
player	O
finds	O
Yeesha	B-Application
strapped	O
into	O
a	O
chair	O
,	O
and	O
she	O
begs	O
to	O
be	O
released	O
from	O
it	O
with	O
a	O
silver	O
lever	O
.	O
</s>
<s>
At	O
that	O
moment	O
,	O
Achenar	O
arrives	O
with	O
a	O
crossbow	O
and	O
the	O
Life	O
Stone	O
,	O
and	O
warns	O
that	O
Sirrus	O
used	O
the	O
Memory	O
Chamber	O
to	O
remove	O
Yeesha	B-Application
's	O
memories	O
and	O
transfer	O
his	O
own	O
into	O
her	O
body	O
;	O
Achenar	O
points	O
to	O
an	O
amber	O
lever	O
,	O
which	O
will	O
reverse	O
the	O
mind-transfer	O
.	O
</s>
<s>
Delaying	O
too	O
long	O
will	O
result	O
in	O
Yeesha	B-Application
(	O
who	O
is	O
in	O
fact	O
Sirrus	O
)	O
taking	O
Achenar	O
's	O
crossbow	O
and	O
shooting	O
first	O
him	O
,	O
then	O
the	O
player	O
.	O
</s>
<s>
The	O
silver	O
lever	O
will	O
release	O
Yeesha	B-Application
(	O
again	O
,	O
possessed	O
by	O
Sirrus	O
)	O
,	O
who	O
kills	O
Achenar	O
and	O
the	O
player	O
.	O
</s>
<s>
But	O
because	O
of	O
the	O
age	O
of	O
the	O
Memory	O
Chamber	O
,	O
it	O
becomes	O
unstable	O
;	O
Achenar	O
tells	O
the	O
player	O
to	O
return	O
to	O
Dream	O
and	O
set	O
Yeesha	B-Application
's	O
memories	O
right	O
,	O
while	O
he	O
uses	O
the	O
Life	O
Stone	O
to	O
stabilize	O
the	O
chamber	O
by	O
inserting	O
it	O
into	O
the	O
chamber	O
's	O
shrine	O
,	O
poisoning	O
him	O
.	O
</s>
<s>
In	O
Dream	O
,	O
the	O
player	O
finds	O
a	O
monstrous	O
creature	O
,	O
representing	O
Sirrus	O
 '	O
Dream-form	O
,	O
anchored	O
to	O
Yeesha	B-Application
's	O
essence	O
and	O
preventing	O
her	O
from	O
returning	O
to	O
her	O
body	O
;	O
with	O
no	O
spirit	O
guide	O
,	O
Sirrus	O
is	O
forced	O
to	O
cling	O
to	O
Yeesha	B-Application
to	O
avoid	O
being	O
lost	O
forever	O
.	O
</s>
<s>
He	O
maintains	O
his	O
anchors	O
by	O
jumbling	O
up	O
Yeesha	B-Application
's	O
memories	O
.	O
</s>
<s>
The	O
player	O
restores	O
Yeesha	B-Application
's	O
memories	O
and	O
frees	O
her	O
from	O
Sirrus	O
 '	O
grasp	O
;	O
Sirrus	O
 '	O
Dream-form	O
is	O
destroyed	O
by	O
the	O
shifting	O
waves	O
of	O
Dream	O
,	O
killing	O
him	O
.	O
</s>
<s>
The	O
player	O
returns	O
to	O
Tomahna	O
to	O
meet	O
with	O
Atrus	O
,	O
who	O
says	O
that	O
Catherine	O
has	O
taken	O
Yeesha	B-Application
to	O
Tay	B-Application
(	O
the	O
"	O
rebel	O
Age	O
"	O
used	O
to	O
evacuate	O
Catherine	O
's	O
people	O
in	O
Riven	B-Application
)	O
,	O
and	O
remarks	O
that	O
while	O
his	O
sons	O
are	O
gone	O
,	O
his	O
daughter	O
is	O
safe	O
.	O
</s>
<s>
When	O
Mattel	O
Interactive	O
still	O
owned	O
the	O
rights	O
to	O
the	O
Myst	B-Application
series	I-Application
,	O
development	O
of	O
Myst	B-Application
IV	I-Application
was	O
contracted	O
out	O
to	O
DreamForge	O
Intertainment	O
,	O
developers	O
of	O
the	O
game	O
Sanitarium	B-Application
;	O
Dreamforge	O
was	O
hired	O
before	O
Presto	O
Studios	O
to	O
develop	O
Myst	B-Application
III	I-Application
:	I-Application
Exile	I-Application
.	O
</s>
<s>
Dreamforge	O
's	O
Myst	B-Application
used	O
real-time	O
graphics	O
,	O
and	O
was	O
two	O
years	O
into	O
development	O
and	O
twenty	O
percent	O
complete	O
when	O
Ubisoft	O
,	O
who	O
had	O
by	O
this	O
point	O
acquired	O
the	O
rights	O
to	O
the	O
series	O
,	O
canceled	O
the	O
project	O
and	O
decided	O
to	O
restart	O
development	O
from	O
scratch	O
internally	O
.	O
</s>
<s>
According	O
to	O
Geneviève	O
Lord	O
,	O
Revelations	O
producer	O
,	O
concluding	O
the	O
story	O
of	O
the	O
two	O
brothers	O
had	O
originally	O
been	O
intended	O
as	O
the	O
plot	O
for	O
Myst	B-Application
III	I-Application
.	O
</s>
<s>
Due	O
to	O
a	O
limited	O
amount	O
of	O
time	O
to	O
develop	O
the	O
game	O
and	O
to	O
not	O
interfere	O
with	O
Dreamforge	O
's	O
Myst	B-Application
game	I-Application
,	O
whose	O
plot	O
details	O
were	O
still	O
forming	O
,	O
the	O
plot	O
was	O
dropped	O
.	O
</s>
<s>
The	O
story	O
was	O
then	O
redeveloped	O
when	O
Ubisoft	O
began	O
work	O
on	O
Myst	B-Application
IV	I-Application
.	O
</s>
<s>
Cyan	O
,	O
Myst	B-Application
and	O
Rivens	B-Application
developer	O
,	O
set	O
down	O
"	O
a	O
certain	O
number	O
of	O
rules	O
"	O
that	O
Ubisoft	O
had	O
to	O
follow	O
,	O
according	O
to	O
Lord	O
,	O
but	O
otherwise	O
the	O
team	O
was	O
free	O
to	O
develop	O
new	O
ideas	O
,	O
keeping	O
in	O
the	O
spirit	O
of	O
Myst	B-Application
lore	O
.	O
</s>
<s>
Early	O
on	O
,	O
the	O
development	O
team	O
made	O
the	O
decision	O
to	O
use	O
pre-rendered	O
graphics	O
for	O
the	O
game	O
,	O
to	O
match	O
the	O
style	O
of	O
previous	O
Myst	B-Application
games	I-Application
.	O
</s>
<s>
As	O
an	O
improvement	O
over	O
the	O
prerendered	O
technology	O
present	O
in	O
Myst	B-Application
,	O
Riven	B-Application
,	O
and	O
Exile	O
,	O
Revelation	O
uses	O
its	O
"	O
ALIVE	O
"	O
engine	O
to	O
animate	O
nearly	O
everything	O
in	O
the	O
game	O
.	O
</s>
<s>
In	O
a	O
trend	O
started	O
by	O
the	O
original	O
Myst	B-Application
,	O
the	O
game	O
uses	O
live	O
actors	O
to	O
play	O
the	O
game	O
's	O
roles	O
in	O
live-action	O
video	O
sequences	O
.	O
</s>
<s>
Revelation	O
was	O
the	O
first	O
game	O
in	O
the	O
series	O
to	O
be	O
initially	O
released	O
on	O
a	O
DVD-ROM	O
format	O
at	O
launch	O
;	O
a	O
multiple	O
CD-ROM	B-Device
version	O
was	O
not	O
produced	O
as	O
it	O
would	O
have	O
taken	O
twelve	O
compact	O
discs	O
to	O
fit	O
the	O
data	O
.	O
</s>
<s>
Riven	B-Application
had	O
been	O
released	O
as	O
a	O
DVD-ROM	O
,	O
but	O
only	O
after	O
its	O
first	O
5-CD	O
version	O
.	O
</s>
<s>
Jack	O
Wall	O
composed	O
,	O
conducted	O
,	O
and	O
produced	O
the	O
music	O
for	O
Revelation	O
;	O
the	O
game	O
was	O
his	O
second	O
game	O
score	O
,	O
following	O
the	O
music	O
for	O
Myst	B-Application
III	I-Application
:	I-Application
Exile	I-Application
.	O
</s>
<s>
Wall	O
reused	O
,	O
reorchestrated	O
and	O
expanded	O
themes	O
composed	O
by	O
previous	O
Myst	B-Application
composer	O
Robyn	O
Miller	O
;	O
for	O
example	O
,	O
Wall	O
reused	O
Atrus	O
 '	O
Theme	O
from	O
Riven	B-Application
and	O
the	O
brothers	O
 '	O
leitmotifs	O
from	O
the	O
original	O
game	O
.	O
</s>
<s>
Wall	O
credited	O
the	O
Myst	B-Application
universe	I-Application
and	O
story	O
with	O
allowing	O
him	O
to	O
write	O
music	O
"	O
Western	O
ears	O
are	O
somewhat	O
less	O
accustomed	O
to	O
"	O
;	O
Revelations	O
score	O
was	O
inspired	O
by	O
Eastern	O
European	O
music	O
that	O
Wall	O
enjoyed	O
in	O
the	O
1990s	O
.	O
</s>
<s>
Overall	O
,	O
Revelation	O
was	O
received	O
positively	O
by	O
critics	O
;	O
the	O
game	O
garnered	O
82/100	O
and	O
82%	O
averages	O
on	O
aggregate	O
sites	O
Metacritic	O
and	O
GameRankings	O
,	O
respectively	O
;	O
the	O
Xbox	B-Application
version	O
of	O
the	O
game	O
received	O
less	O
favorable	O
scores	O
than	O
the	O
computer	O
version	O
.	O
</s>
<s>
By	O
that	O
date	O
,	O
combined	O
sales	O
of	O
all	O
Myst	B-Application
games	I-Application
released	O
in	O
the	O
2000s	O
had	O
reached	O
1.6	O
million	O
units	O
in	O
the	O
country	O
.	O
</s>
<s>
As	O
with	O
previous	O
Myst	B-Application
games	I-Application
,	O
the	O
visuals	O
and	O
interactivity	O
of	O
Revelation	O
were	O
singled	O
out	O
as	O
the	O
strongest	O
features	O
.	O
</s>
<s>
PC	O
Zone	O
proclaimed	O
that	O
although	O
it	O
would	O
have	O
been	O
easy	O
for	O
the	O
developers	O
to	O
lose	O
heart	O
after	O
the	O
disappointing	O
Uru	B-Application
:	I-Application
Ages	I-Application
Beyond	I-Application
Myst	I-Application
,	O
Ubisoft	O
had	O
instead	O
produced	O
"	O
one	O
of	O
the	O
most	O
polished	O
games	O
"	O
the	O
reviewer	O
,	O
Paul	O
Presley	O
,	O
had	O
ever	O
come	O
across	O
.	O
</s>
<s>
Certain	O
reviewers	O
criticized	O
aspects	O
of	O
the	O
gameplay	O
that	O
had	O
not	O
been	O
fixed	O
or	O
altered	O
from	O
previous	O
Myst	B-Application
titles	O
.	O
</s>
<s>
Revelation	O
would	O
be	O
the	O
last	O
Myst	B-Application
game	I-Application
that	O
used	O
prerendered	O
graphics	O
or	O
full	O
motion	O
video	O
.	O
</s>
<s>
Cyan	O
Worlds	O
,	O
the	O
original	O
developer	O
of	O
both	O
Myst	B-Application
and	O
Riven	B-Application
,	O
used	O
real-time	O
rendered	O
graphics	O
for	O
the	O
next	O
installment	O
in	O
the	O
series	O
,	O
Myst	B-Application
V	I-Application
:	I-Application
End	I-Application
of	I-Application
Ages	I-Application
.	O
</s>
<s>
Myst	B-Application
V	I-Application
was	O
announced	O
as	O
the	O
final	O
game	O
in	O
the	O
series	O
.	O
</s>
<s>
Revelation	O
won	O
GameSpot	O
's	O
and	O
GameSpy	O
's	O
2004	O
"	O
Best	O
Adventure	O
Game	O
"	O
awards	O
,	O
and	O
was	O
selected	O
as	O
a	O
runner-up	O
in	O
these	O
categories	O
by	O
Computer	O
Gaming	O
World	O
and	O
IGN	O
,	O
losing	O
respectively	O
to	O
In	B-Application
Memoriam	I-Application
and	O
Sid	B-Application
Meier	I-Application
's	I-Application
Pirates	I-Application
!	I-Application
</s>
<s>
In	O
2011	O
,	O
Adventure	O
Gamers	O
named	O
Myst	B-Application
IV	I-Application
the	O
40th-best	O
adventure	O
game	O
ever	O
released	O
.	O
</s>
