<s>
Nightshade	B-Application
is	O
an	O
action	B-Application
video	I-Application
game	I-Application
developed	O
and	O
published	O
by	O
Ultimate	O
Play	O
the	O
Game	O
.	O
</s>
<s>
It	O
was	O
first	O
released	O
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
in	O
1985	O
,	O
and	O
was	O
then	O
ported	O
to	O
the	O
Amstrad	B-Device
CPC	I-Device
and	O
BBC	B-Device
Micro	I-Device
later	O
that	O
year	O
.	O
</s>
<s>
It	O
was	O
also	O
ported	O
to	O
the	O
MSX	B-Operating_System
exclusively	O
in	O
Japan	O
in	O
1986	O
.	O
</s>
<s>
In	O
the	O
game	O
,	O
the	O
player	O
assumes	O
the	O
role	O
of	O
a	O
knight	O
who	O
sets	O
out	O
to	O
destroy	O
four	O
demons	B-Operating_System
in	O
a	O
plague-infested	O
village	O
.	O
</s>
<s>
The	O
game	O
features	O
scrolling	O
isometric	B-Application
gameplay	O
,	O
an	O
improvement	O
over	O
its	O
flip-screen-driven	O
predecessors	O
,	O
Knight	B-Application
Lore	I-Application
and	O
Alien	B-Application
8	I-Application
,	O
all	O
thanks	O
to	O
an	O
enhanced	O
version	O
of	O
the	O
Ultimate	O
Play	O
the	O
Game	O
's	O
Filmation	B-Application
game	O
engine	O
,	O
branded	O
Filmation	B-Application
II	I-Application
.	O
</s>
<s>
The	O
game	O
is	O
presented	O
in	O
an	O
isometric	B-Application
format	O
.	O
</s>
<s>
The	O
player	O
assumes	O
the	O
role	O
of	O
a	O
knight	O
who	O
enters	O
the	O
plague-infested	O
village	O
of	O
Nightshade	B-Application
to	O
vanquish	O
four	O
demons	B-Operating_System
who	O
reside	O
within	O
.	O
</s>
<s>
Additionally	O
,	O
all	O
residents	O
from	O
the	O
village	O
have	O
been	O
transformed	O
into	O
vampires	B-Application
and	O
other	O
supernatural	O
creatures	O
.	O
</s>
<s>
The	O
objective	O
of	O
the	O
game	O
is	O
to	O
locate	O
and	O
destroy	O
four	O
specific	O
demons	B-Operating_System
.	O
</s>
<s>
Each	O
demon	B-Operating_System
is	O
vulnerable	O
to	O
a	O
particular	O
object	O
which	O
must	O
be	O
collected	O
by	O
the	O
player	O
:	O
a	O
hammer	B-Application
,	O
a	O
Bible	O
,	O
a	O
crucifix	O
and	O
an	O
hourglass	O
.	O
</s>
<s>
Once	O
the	O
four	O
items	O
have	O
been	O
collected	O
,	O
the	O
player	O
must	O
track	O
down	O
a	O
specific	O
demon	B-Operating_System
and	O
cast	O
the	O
correct	O
item	O
at	O
it	O
in	O
order	O
to	O
destroy	O
it	O
.	O
</s>
<s>
Once	O
all	O
four	O
demons	B-Operating_System
have	O
been	O
destroyed	O
,	O
the	O
game	O
will	O
end	O
.	O
</s>
<s>
In	O
order	O
to	O
defend	O
against	O
other	O
enemies	O
such	O
as	O
vampires	B-Application
and	O
monsters	O
,	O
the	O
player	O
can	O
arm	O
themselves	O
with	O
"	O
antibodies	O
"	O
,	O
which	O
can	O
then	O
be	O
thrown	O
at	O
enemies	O
.	O
</s>
<s>
They	O
began	O
producing	O
multiple	O
video	O
games	O
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
throughout	O
the	O
early	O
1980s	O
.	O
</s>
<s>
When	O
a	O
journalist	O
reviewing	O
Nightshade	B-Application
for	O
Crash	O
asked	O
Tim	O
and	O
Chris	O
Stamper	O
what	O
the	O
object	O
of	O
the	O
game	O
was	O
they	O
responded	O
:	O
"	O
oh	O
,	O
we	O
ca	O
n't	O
tell	O
you	O
that	O
"	O
.	O
</s>
<s>
The	O
game	O
was	O
developed	O
with	O
the	O
isometric	B-Application
projection	O
game	O
engine	O
known	O
as	O
Filmation	B-Application
II	I-Application
,	O
an	O
upgraded	O
version	O
of	O
the	O
Filmation	B-Application
engine	I-Application
.	O
</s>
<s>
The	O
Filmation	B-Application
engine	I-Application
was	O
created	O
by	O
the	O
Stamper	O
brothers	O
to	O
portray	O
3D	O
imagery	O
.	O
</s>
<s>
Filmation	B-Application
II	I-Application
used	O
an	O
image	O
masking	O
technique	O
that	O
drew	O
and	O
filled	O
holes	O
in	O
the	O
background	O
,	O
allowing	O
the	O
game	O
to	O
create	O
composite	O
structures	O
out	O
of	O
pixelated	O
drawings	O
without	O
visual	O
overlay	O
,	O
despite	O
the	O
limitations	O
platforms	O
such	O
as	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
offered	O
.	O
</s>
<s>
Nightshade	B-Application
was	O
first	O
released	O
in	O
the	O
United	O
Kingdom	O
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
in	O
1985	O
,	O
and	O
was	O
then	O
ported	O
to	O
the	O
Amstrad	B-Device
CPC	I-Device
and	O
BBC	B-Device
Micro	I-Device
later	O
that	O
year	O
.	O
</s>
<s>
It	O
was	O
also	O
ported	O
to	O
the	O
MSX	B-Operating_System
exclusively	O
in	O
Japan	O
in	O
1986	O
.	O
</s>
<s>
Chris	O
Bourne	O
of	O
Sinclair	O
User	O
praised	O
the	O
game	O
's	O
new	O
graphics	O
system	O
,	O
opining	O
that	O
it	O
was	O
"	O
wonderfully	O
"	O
detailed	O
and	O
"	O
juiced	O
up	O
"	O
in	O
contrast	O
to	O
its	O
predecessors	O
,	O
Knight	B-Application
Lore	I-Application
and	O
Alien	B-Application
8	I-Application
.	O
</s>
<s>
A	O
reviewer	O
writing	O
for	O
Computer	O
and	O
Video	O
Games	O
praised	O
the	O
graphics	O
as	O
"	O
great	O
"	O
and	O
stated	O
that	O
its	O
sound	O
effects	O
were	O
"	O
up	O
to	O
standard	O
"	O
considering	O
the	O
"	O
dumb	O
"	O
ZX	B-Operating_System
Spectrum	I-Operating_System
.	O
</s>
<s>
Philippa	O
Irving	O
of	O
Crash	O
thought	O
that	O
the	O
visuals	O
and	O
use	O
of	O
colours	O
were	O
"	O
stunning	O
"	O
and	O
up	O
to	O
Ultimate	O
Play	O
the	O
Game	O
's	O
"	O
usual	O
standards	O
"	O
,	O
however	O
she	O
did	O
notice	O
a	O
few	O
instances	O
of	O
attribute	B-Algorithm
clash	I-Algorithm
.	O
</s>
<s>
The	O
reviewer	O
from	O
Computer	O
and	O
Video	O
Games	O
appreciated	O
Nightshades	B-Application
"	O
nice	O
touches	O
"	O
,	O
summarising	O
that	O
it	O
was	O
an	O
instant	O
classic	O
from	O
Ultimate	O
Play	O
the	O
Game	O
.	O
</s>
<s>
Irving	O
criticised	O
the	O
lack	O
of	O
instructions	O
or	O
hints	O
that	O
came	O
with	O
the	O
game	O
,	O
and	O
stated	O
that	O
Nightshade	B-Application
did	O
not	O
set	O
new	O
standards	O
with	O
programming	O
,	O
unlike	O
Knight	B-Application
Lore	I-Application
and	O
Alien	B-Application
8	I-Application
.	O
</s>
<s>
A	O
reviewer	O
from	O
Home	O
Computing	O
Weekly	O
stated	O
that	O
the	O
gameplay	O
was	O
not	O
as	O
addictive	O
as	O
Knight	B-Application
Lore	I-Application
or	O
Alien	B-Application
8	I-Application
due	O
to	O
the	O
game	O
's	O
lack	O
of	O
obstacles	O
.	O
</s>
<s>
Jenkins	O
praised	O
the	O
game	O
's	O
use	O
of	O
its	O
new	O
engine	O
,	O
Filmation	B-Application
II	I-Application
,	O
stating	O
that	O
it	O
was	O
ahead	O
of	O
"	O
everything	O
else	O
"	O
on	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
.	O
</s>
