<s>
Night	B-Application
Stalker	I-Application
is	O
a	O
top-down	O
maze	B-Application
shooter	O
designed	O
by	O
Steve	O
Montero	O
and	O
released	O
for	O
the	O
Intellivision	B-Operating_System
console	O
in	O
1982	O
.	O
</s>
<s>
Night	B-Application
Stalker	I-Application
was	O
ported	O
to	O
the	O
Atari	B-General_Concept
2600	I-General_Concept
as	O
Dark	B-Application
Cavern	I-Application
and	O
released	O
under	O
Mattel	O
's	O
M	O
Network	O
label	O
.	O
</s>
<s>
Apple	B-Device
II	I-Device
and	O
IBM	B-Device
PC	I-Device
versions	O
were	O
published	O
in	O
1983	O
.	O
</s>
<s>
The	O
player	O
controls	O
a	O
man	O
trapped	O
in	O
a	O
hedgerow	O
maze	B-Application
with	O
no	O
exits	O
and	O
many	O
threats	O
,	O
some	O
natural	O
such	O
as	O
bats	O
and	O
spiders	O
,	O
others	O
artificial	O
and	O
more	O
deadly	O
in	O
nature	O
such	O
as	O
robots	B-Algorithm
.	O
</s>
<s>
Once	O
the	O
ammunition	O
has	O
been	O
exhausted	O
,	O
the	O
gun	O
icon	O
will	O
appear	O
again	O
and	O
the	O
player	O
must	O
move	O
defenselessly	O
through	O
the	O
maze	B-Application
to	O
retrieve	O
the	O
new	O
weapon	O
.	O
</s>
<s>
There	O
are	O
five	O
different	O
robots	B-Algorithm
that	O
the	O
man	O
encounters	O
in	O
accordance	O
with	O
the	O
point	O
total	O
.	O
</s>
<s>
The	O
bunker	O
is	O
a	O
safe	O
zone	O
and	O
the	O
player	O
is	O
impervious	O
to	O
damage	O
while	O
inside	O
,	O
though	O
the	O
more	O
advanced	O
robot	B-Algorithm
adversaries	O
have	O
the	O
firepower	O
to	O
destroy	O
this	O
safe	O
haven	O
.	O
</s>
<s>
The	O
Intellivision	B-Operating_System
version	O
was	O
made	O
available	O
for	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
through	O
PlayStation	B-Protocol
Home	I-Protocol
in	O
fall	O
2012	O
in	O
a	O
collection	O
titled	O
Intellivision	B-Operating_System
Gen2	O
.	O
</s>
<s>
In	O
addition	O
to	O
being	O
filled	O
with	O
bats	O
and	O
spiders	O
,	O
it	O
had	O
a	O
greater	O
variety	O
of	O
killer	O
robots	B-Algorithm
along	O
with	O
a	O
variety	O
of	O
maze	B-Application
structures	O
.	O
</s>
<s>
An	O
updated	O
version	O
of	O
Night	B-Application
Stalker	I-Application
of	O
the	O
same	O
name	O
has	O
been	O
announced	O
for	O
release	O
on	O
the	O
Intellivision	B-Application
Amico	I-Application
video	O
game	O
console	O
in	O
2020	O
.	O
</s>
