<s>
It	O
was	O
poorly	O
received	O
,	O
largely	O
due	O
to	O
its	O
use	O
of	O
the	O
outdated	O
Wolfenstein	B-Application
3D	I-Application
engine	O
,	O
which	O
was	O
technologically	O
inferior	O
to	O
the	O
Doom	B-Application
engine	I-Application
,	O
which	O
was	O
available	O
at	O
the	O
time	O
.	O
</s>
<s>
A	O
sequel	O
,	O
Corridor	B-Application
8	I-Application
:	I-Application
Galactic	I-Application
Wars	I-Application
,	O
was	O
in	O
development	O
,	O
but	O
later	O
cancelled	O
.	O
</s>
<s>
The	O
staff	O
of	O
a	O
top-secret	O
research	O
laboratory	O
,	O
Corridor	O
7	O
,	O
inadvertently	O
open	O
an	O
interdimensional	O
portal	O
known	O
as	O
the	O
Vortex	O
while	O
experimenting	O
on	O
an	O
alien	O
artifact	O
recovered	O
from	O
Mars	B-Application
.	O
</s>
<s>
The	O
player	O
,	O
as	O
a	O
lone	O
Special	B-Application
Forces	I-Application
soldier	O
,	O
enters	O
the	O
base	O
to	O
kill	O
the	O
aliens	O
and	O
destroy	O
the	O
source	O
of	O
their	O
power	O
.	O
</s>
<s>
The	O
immense	O
success	O
of	O
the	O
multiplayer	O
modes	O
in	O
Doom	O
is	O
believed	O
to	O
be	O
the	O
reason	O
behind	O
the	O
addition	O
of	O
LAN	B-General_Concept
and	O
modem	B-Application
game	O
play	O
modes	O
in	O
the	O
CD	O
release	O
of	O
Corridor	O
7	O
.	O
</s>
<s>
Players	O
can	O
play	O
as	O
either	O
the	O
Special	B-Application
Forces	I-Application
soldiers	O
from	O
the	O
single-player	O
mode	O
or	O
as	O
one	O
of	O
the	O
aliens	O
;	O
playing	O
as	O
an	O
alien	O
results	O
in	O
possessing	O
the	O
distinctive	O
abilities	O
of	O
the	O
creature	O
chosen	O
(	O
e.g.	O
</s>
<s>
Chris	O
Anderson	O
of	O
PC	O
Zone	O
stated	O
that	O
the	O
game	O
offered	O
"	O
nothing	O
new	O
and	O
what	O
is	O
there	O
is	O
n't	O
very	O
exciting	O
"	O
,	O
and	O
largely	O
criticized	O
its	O
use	O
of	O
the	O
Wolfenstein	B-Application
3D	I-Application
engine	O
.	O
</s>
<s>
Corridor	B-Application
8	I-Application
:	I-Application
Galactic	I-Application
Wars	I-Application
was	O
the	O
planned	O
sequel	O
to	O
Corridor	O
7	O
.	O
</s>
<s>
The	O
game	O
was	O
in	O
development	O
and	O
used	O
the	O
Build	B-Application
engine	I-Application
,	O
though	O
it	O
was	O
never	O
finished	O
because	O
the	O
developer	O
,	O
Capstone	O
Software	O
,	O
went	O
bankrupt	O
along	O
with	O
their	O
parent	O
company	O
,	O
IntraCorp	O
,	O
in	O
1996	O
.	O
</s>
<s>
The	O
game	O
only	O
made	O
it	O
to	O
prototype	B-Application
stage	O
.	O
</s>
<s>
In	O
2005	O
,	O
Les	O
Bird	O
sent	O
the	O
Corridor	B-Application
8	I-Application
prototype	B-Application
source	O
code	O
to	O
a	O
Corridor	O
7	O
fan	O
,	O
who	O
put	O
it	O
onto	O
his	O
website	O
as	O
a	O
free	B-License
download	O
.	O
</s>
