<s>
Blockout	B-Device
is	O
a	O
puzzle	O
video	O
game	O
published	O
in	O
1989	O
by	O
California	O
Dreams	O
.	O
</s>
<s>
Blockout	B-Device
is	O
an	O
unlicensed	O
,	O
3D	O
version	O
of	O
Tetris	B-Device
.	O
</s>
<s>
The	O
player	O
can	O
use	O
three	O
buttons	O
to	O
rotate	O
the	O
block	O
around	O
any	O
of	O
the	O
three	O
coordinate	O
axes	O
,	O
and	O
can	O
also	O
maneuver	O
the	O
block	O
horizontally	O
and	O
vertically	O
with	O
a	O
joystick	B-Device
.	O
</s>
<s>
Once	O
any	O
part	O
of	O
a	O
block	O
comes	O
to	O
rest	O
on	O
the	O
floor	O
of	O
the	O
pit	O
or	O
in	O
contact	O
with	O
an	O
already-placed	O
cube	B-Application
,	O
the	O
entire	O
block	O
freezes	O
in	O
place	O
and	O
can	O
no	O
longer	O
be	O
moved	O
.	O
</s>
<s>
The	O
player	O
can	O
press	O
a	O
button	O
on	O
the	O
joystick	B-Device
to	O
quickly	O
drop	O
a	O
block	O
.	O
</s>
<s>
Once	O
a	O
solid	O
layer	O
of	O
cubes	B-Application
is	O
formed	O
with	O
no	O
gaps	O
(	O
a	O
"	O
face	O
"	O
)	O
,	O
it	O
disappears	O
and	O
all	O
cubes	B-Application
above	O
it	O
drop	O
toward	O
the	O
bottom	O
of	O
the	O
pit	O
to	O
fill	O
the	O
space	O
.	O
</s>
<s>
Completing	O
multiple	O
faces	O
with	O
a	O
single	O
block	O
awards	O
higher	O
scores	O
,	O
and	O
the	O
player	O
earns	O
a	O
"	O
Block	B-Device
Out	I-Device
"	O
bonus	O
for	O
completely	O
emptying	O
the	O
pit	O
.	O
</s>
<s>
When	O
one	O
player	O
completes	O
a	O
face	O
,	O
all	O
the	O
cubes	B-Application
in	O
the	O
opponent	O
's	O
pit	O
are	O
raised	O
by	O
one	O
level	O
.	O
</s>
<s>
A	O
player	O
can	O
win	O
a	O
round	O
by	O
either	O
being	O
the	O
first	O
to	O
complete	O
a	O
set	O
number	O
of	O
faces	O
or	O
by	O
forcing	O
their	O
opponent	O
's	O
cubes	B-Application
to	O
stack	O
up	O
to	O
the	O
top	O
of	O
the	O
pit	O
.	O
</s>
<s>
Apart	O
from	O
the	O
other	O
known	O
console	O
ports	O
of	O
Blockout	B-Device
,	O
there	O
were	O
also	O
two	O
for	O
NES	O
:	O
the	O
first	O
is	O
an	O
official	O
unreleased	O
prototype	O
developed	O
in	O
1990	O
by	O
Technos	O
Japan	O
Corp	O
.	O
under	O
the	O
name	O
"	O
Block	B-Device
Out	I-Device
"	O
,	O
while	O
the	O
second	O
is	O
an	O
unauthorized	O
clone	O
programmed	O
by	O
Hwang	O
Shinwei	O
and	O
published	O
by	O
both	O
himself	O
and	O
RCM	O
Group	O
in	O
1989/1990	O
(	O
titled	O
3D	O
Block	O
)	O
.	O
</s>
<s>
Blockout	B-Device
was	O
ported	O
to	O
the	O
Virtual	B-Device
Boy	I-Device
as	O
3D	O
Tetris	B-Device
(	O
March	O
22	O
,	O
1996	O
)	O
,	O
though	O
the	O
game	O
suffers	O
greatly	O
from	O
the	O
lack	O
of	O
colors	O
beyond	O
red	O
and	O
black	O
.	O
</s>
<s>
The	O
New	O
York	O
Times	O
reviewed	O
the	O
game	O
in	O
an	O
article	O
about	O
educational	B-Application
software	I-Application
for	O
mathematics	O
,	O
writing	O
that	O
Blockout	B-Device
"	O
does	O
n't	O
pretend	O
to	O
be	O
educational	O
,	O
but	O
the	O
skills	O
required	O
to	O
master	O
it	O
are	O
not	O
unrelated	O
to	O
mathematics	O
,	O
particularly	O
geometry.	O
"	O
</s>
<s>
A	O
1993	O
study	O
found	O
evidence	O
that	O
playing	O
Blockout	B-Device
improved	O
the	O
spatial	O
visualization	O
ability	O
of	O
10	O
-	O
to	O
14-year-olds	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
Block	B-Device
Out	I-Device
on	O
their	O
March	O
1	O
,	O
1990	O
issue	O
as	O
being	O
the	O
tenth	O
most-successful	O
table	O
arcade	O
unit	O
of	O
the	O
month	O
.	O
</s>
<s>
Dragon	O
gave	O
the	O
game	O
's	O
Atari	B-General_Concept
Lynx	I-General_Concept
version	O
a	O
perfect	O
score	O
.	O
</s>
<s>
Robert	O
A	O
.	O
Jung	O
reviewed	O
the	O
Atari	B-General_Concept
Lynx	I-General_Concept
version	O
of	O
the	O
game	O
which	O
was	O
published	O
to	O
IGN	O
.	O
</s>
<s>
Without	O
any	O
patterns	O
to	O
memorize	O
and	O
several	O
options	O
to	O
choose	O
from	O
,	O
Blockout	B-Device
will	O
keep	O
its	O
freshness	O
for	O
quite	O
some	O
time	O
.	O
</s>
<s>
If	O
you	O
thought	O
Tetris	B-Device
was	O
too	O
simple	O
,	O
give	O
this	O
title	O
a	O
try.	O
"	O
</s>
<s>
Around	O
2007	O
a	O
modernized	O
,	O
authorized	O
continuation/remake	O
named	O
Blockout	B-Device
II	O
was	O
released	O
with	O
a	O
license	O
from	O
Kadon	O
Enterprises	O
,	O
to	O
use	O
the	O
trademarked	O
Blockout	B-Device
name	O
.	O
</s>
<s>
The	O
game	O
is	O
open-source	B-Application
and	O
was	O
ported	O
to	O
many	O
platforms	O
the	O
original	O
was	O
n't	O
available	O
before	O
,	O
like	O
Microsoft	B-Application
Windows	I-Application
,	O
Ubuntu	B-Operating_System
,	O
and	O
the	O
OpenPandora	B-Device
handheld	B-Application
.	O
</s>
<s>
It	O
is	O
officially	O
licensed	O
to	O
use	O
the	O
name	O
Blockout	B-Device
.	O
</s>
