<s>
Castle	B-Application
Quest	I-Application
is	O
action-adventure	O
game	O
for	O
the	O
BBC	B-Device
Micro	I-Device
noted	O
at	O
the	O
time	O
of	O
release	O
as	O
being	O
the	O
best	O
game	O
on	O
the	O
platform	O
in	O
its	O
genre	O
for	O
its	O
problem	O
solving	O
,	O
colourful	O
graphics	O
and	O
smooth	O
scrolling	O
.	O
</s>
<s>
The	O
game	O
was	O
reported	O
as	O
being	O
programmer	O
Tony	O
Sothcott	O
's	O
first	O
machine	B-Language
code	I-Language
game	O
.	O
</s>
<s>
Its	O
colours	O
are	O
achieved	O
using	O
,	O
requiring	O
more	O
than	O
half	O
of	O
total	O
available	O
RAM	B-Architecture
.	O
</s>
<s>
Two	O
adjacent	O
blocks	O
are	O
stored	O
as	O
a	O
single	O
byte	B-Application
within	O
the	O
map	O
data	O
,	O
which	O
occupies	O
in	O
total	O
.	O
</s>
<s>
The	O
game	O
was	O
listed	O
as	O
a	O
'	O
star	O
game	O
 '	O
in	O
a	O
1985	B-Application
review	O
in	O
Personal	O
Computer	O
News	O
(	O
PCN	O
)	O
and	O
was	O
featured	O
in	O
an	O
illustrated	O
double-page	O
spread	O
in	O
the	O
issue	O
of	O
Acorn	O
User	O
(	O
AU	O
)	O
.	O
</s>
<s>
PCN	O
Reviewer	O
Bryan	O
Skinner	O
noted	O
that	O
the	O
programmer	O
had	O
developed	O
"	O
something	O
really	O
special	O
"	O
,	O
with	O
both	O
publications	O
noting	O
the	O
"	O
clever	O
"	O
use	O
of	O
colourful	O
graphics	O
,	O
but	O
little	O
use	O
of	O
sound	O
,	O
possibly	O
due	O
to	O
lack	O
of	O
available	O
RAM	B-Architecture
.	O
</s>
<s>
Skinner	O
was	O
of	O
the	O
opinion	O
that	O
Castle	B-Application
Quest	I-Application
was	O
"	O
the	O
best	O
arcade	O
game	O
"	O
on	O
the	O
BBC	B-Device
Micro	I-Device
and	O
would	O
qualify	O
as	O
"	O
the	O
best	O
game	O
"	O
were	O
it	O
not	O
for	O
the	O
existence	O
of	O
Elite	B-Application
.	O
</s>
<s>
He	O
called	O
for	O
readers	O
to	O
join	O
him	O
in	O
demanding	O
that	O
Micro	O
Power	O
convert	O
the	O
game	O
for	O
the	O
Commodore	O
64	O
and	O
ZX	B-Operating_System
Spectrum	I-Operating_System
.	O
</s>
<s>
The	O
AU	O
feature	O
was	O
justified	O
(	O
while	O
acknowledging	O
the	O
earlier	O
March	O
review	O
)	O
by	O
the	O
opinion	O
that	O
the	O
game	O
represented	O
a	O
landmark	O
in	O
game	O
development	O
,	O
both	O
on	O
the	O
BBC	B-Device
Micro	I-Device
and	O
other	O
platforms	O
.	O
</s>
