<s>
Nitemare	B-Application
3D	I-Application
is	O
a	O
horror-themed	O
first-person	O
shooter	O
released	O
by	O
Gray	O
Design	O
Associates	O
in	O
1994	O
for	O
MS-DOS	B-Application
and	O
Windows	O
3.x	O
.	O
</s>
<s>
There	O
are	O
three	O
episodes	O
with	O
the	O
first	O
episode	O
released	O
as	O
shareware	B-License
and	O
ten	O
levels	O
in	O
each	O
.	O
</s>
<s>
The	O
visuals	O
are	O
similar	O
to	O
those	O
used	O
in	O
Wolfenstein	B-Application
3D	I-Application
with	O
perpendicular	O
walls	O
and	O
no	O
textures	O
on	O
the	O
floors	O
and	O
ceilings	O
.	O
</s>
<s>
The	O
music	O
in	O
was	O
composed	O
by	O
David	O
B	O
.	O
Schultz	O
who	O
also	O
composed	O
for	O
Quiver	B-Application
.	O
</s>
<s>
Nitemare	B-Application
3D	I-Application
follows	O
the	O
story	O
of	O
Hugo	O
,	O
from	O
the	O
Hugo	O
trilogy	O
,	O
a	O
series	O
of	O
graphic	O
adventure	O
PC	O
games	O
consisting	O
of	O
Hugo	B-Application
's	I-Application
House	I-Application
of	I-Application
Horrors	I-Application
,	O
Hugo	O
II	O
,	O
Whodunit	O
?,	O
and	O
Hugo	B-Application
III	I-Application
,	I-Application
Jungle	I-Application
of	I-Application
Doom	I-Application
!	I-Application
.	O
</s>
<s>
Penelope	O
,	O
Hugo	O
's	O
girlfriend	O
,	O
has	O
been	O
kidnapped	O
by	O
the	O
evil	O
Dr.	B-Application
Hammerstein	I-Application
for	O
use	O
in	O
heinous	O
experiments	O
.	O
</s>
<s>
Rather	O
than	O
the	O
fast-paced	O
action	O
of	O
Wolfenstein	B-Application
3D	I-Application
,	O
Nitemare	B-Application
3D	I-Application
has	O
a	O
slightly	O
slower	O
,	O
more	O
puzzle-oriented	O
style	O
of	O
gameplay	O
.	O
</s>
<s>
Meanwhile	O
,	O
vampires	B-Application
take	O
heavy	O
damage	O
from	O
silver	O
bullets	O
,	O
while	O
shrugging	O
off	O
the	O
effects	O
of	O
the	O
plasma	O
gun	O
.	O
</s>
<s>
In	O
a	O
similar	O
vein	O
to	O
id	O
Software	O
's	O
Wolfenstein	B-Application
3D	I-Application
and	O
Doom	B-Application
,	O
the	O
player	O
character	O
's	O
face	O
is	O
shown	O
on	O
the	O
status	O
bar	O
and	O
acts	O
as	O
a	O
visual	O
reflection	O
of	O
the	O
player	O
's	O
health	O
,	O
although	O
instead	O
of	O
becoming	O
bloodier	O
,	O
the	O
skin	O
wears	O
away	O
,	O
leaving	O
a	O
skull	O
when	O
near	O
death	O
,	O
and	O
a	O
darkened	O
skull	O
when	O
dead	O
,	O
perhaps	O
intentionally	O
similar	O
to	O
the	O
children	O
's	O
game	O
show	O
,	O
Knightmare	B-Application
;	O
It	O
is	O
also	O
similar	O
to	O
the	O
early	O
Catacomb	B-Application
3-D	I-Application
games	O
.	O
</s>
