<s>
"	O
Black	B-Application
Crystal	I-Application
"	O
is	O
an	O
action-adventure	O
game	O
released	O
in	O
1982	B-Application
for	O
the	O
ZX81	O
,	O
ZX	B-Operating_System
Spectrum	I-Operating_System
,	O
Commodore	O
64	O
and	O
TI-99/4A	B-Device
computers	O
by	O
Carnell	O
Software	O
Ltd	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
in	O
the	O
"	O
Third	O
Continent	O
Trilogy	O
"	O
of	O
adventure	O
games	O
;	O
followed	O
by	O
Volcanic	B-Application
Dungeon	I-Application
and	O
The	B-Application
Wrath	I-Application
of	I-Application
Magra	I-Application
.	O
</s>
<s>
The	O
game	O
featured	O
an	O
epic	O
story	O
spanning	O
many	O
locations	O
;	O
Kingdom	O
of	O
Beroth	O
,	O
Castle	O
of	O
Shadows	O
,	O
The	O
Shaggoth	O
's	O
Lair	O
,	O
The	O
Temple	O
of	O
the	O
Fire	O
Demon	O
,	O
The	O
Tower	O
of	O
Beroth	O
,	O
The	O
Sea	O
of	O
Sand	O
,	O
The	O
Underground	O
Swamp	O
,	O
Gold	O
Mine	O
,	O
Bridge	O
Over	O
Abyss	O
,	O
Temple	O
Maze	O
,	O
Room	O
of	O
Pits	O
,	O
Lords	O
of	O
Chaos	O
and	O
finally	O
The	O
Black	B-Application
Crystal	I-Application
.	O
</s>
<s>
Tobias	O
has	O
summoned	O
a	O
Black	B-Application
Crystal	I-Application
and	O
this	O
can	O
only	O
be	O
destroyed	O
by	O
visiting	O
six	O
maps	O
and	O
retrieving	O
seven	O
rings	O
of	O
power	O
.	O
</s>
<s>
The	O
player	O
would	O
rely	O
on	O
a	O
mix	O
of	O
Purity	O
,	O
Physical	O
Strength	O
and	O
Spiritual	O
Strength	O
to	O
succeed	O
the	O
many	O
tasks	O
needed	O
to	O
reach	O
and	O
win	O
the	O
Black	B-Application
Crystal	I-Application
.	O
</s>
<s>
The	O
first	O
to	O
be	O
produced	O
was	O
Black	B-Application
Crystal	I-Application
from	O
Carnell	O
Software	O
...	O
"	O
</s>
<s>
"	O
Black	B-Application
Crystal	I-Application
is	O
the	O
most	O
ambitious	O
adventure	O
game	O
I	O
've	O
seen	O
for	O
the	O
ZX81	O
,	O
with	O
elements	O
of	O
Lord	O
Of	O
The	O
Rings	O
grafted	O
on	O
to	O
the	O
adventure	O
format	O
.	O
</s>
<s>
Still	O
,	O
Black	B-Application
Crystal	I-Application
has	O
impressed	O
me	O
by	O
its	O
sheer	O
quantity	O
and	O
generally	O
high	O
quality	O
of	O
presentation	O
.	O
</s>
<s>
"	O
There	O
...	O
are	O
a	O
few	O
of	O
these	O
games	O
that	O
have	O
gone	O
down	O
is	O
history	O
...	O
3D	O
defender	O
,	O
Black	B-Application
Crystal	I-Application
,	O
QS	O
Scramble	O
and	O
Galactic	O
Trooper	O
are	O
all	O
worth	O
a	O
play.	O
"	O
</s>
