<s>
Catacomb	B-Application
is	O
a	O
2-D	O
top-down	O
third-person	O
shooter	O
created	O
,	O
developed	O
,	O
and	O
published	O
by	O
Softdisk	O
.	O
</s>
<s>
It	O
was	O
originally	O
created	O
for	O
the	O
Apple	B-Device
II	I-Device
,	O
and	O
later	O
ported	O
to	O
the	O
PC	O
.	O
</s>
<s>
It	O
should	O
not	O
be	O
confused	O
with	O
The	O
Catacomb	B-Application
,	O
which	O
is	O
the	O
second	O
game	O
in	O
the	O
series	O
(	O
originally	O
named	O
Catacomb	B-Application
II	I-Application
,	O
but	O
later	O
renamed	O
)	O
.	O
</s>
<s>
It	O
supports	O
EGA	B-Device
and	O
CGA	B-Device
graphics	I-Device
.	O
</s>
<s>
All	O
the	O
Catacomb	B-Application
titles	O
,	O
including	O
the	O
Catacomb	B-Application
3D	I-Application
games	O
,	O
are	O
now	O
distributed	O
legally	O
by	O
Flat	O
Rock	O
Software	O
through	O
their	O
own	O
web	O
store	O
and	O
via	O
GOG.com	O
.	O
</s>
<s>
The	O
source	O
code	O
to	O
the	O
game	O
was	O
released	O
by	O
Flat	O
Rock	O
in	O
June	O
2014	O
under	O
GNU	B-License
GPL-2.0-or-later	I-License
in	O
a	O
manner	O
similar	O
those	O
done	O
by	O
id	O
Software	O
and	O
partners	O
.	O
</s>
<s>
Catacomb	B-Application
consists	O
of	O
fifteen	O
levels	O
in	O
the	O
Apple	B-Device
II	I-Device
version	O
,	O
ten	O
levels	O
in	O
the	O
PC	O
demo	O
disk	O
promoting	O
Gamer	O
's	O
Edge	O
,	O
and	O
30	O
levels	O
in	O
the	O
full	O
PC	O
version	O
(	O
The	O
Catacomb	B-Application
,	O
aka	O
Catacomb	B-Application
II	I-Application
)	O
.	O
</s>
<s>
There	O
are	O
five	O
different	O
enemies	O
:	O
Goblin	O
,	O
Skeleton	O
,	O
Ogre	B-Application
,	O
Gargoyle	B-Application
and	O
Dragon	O
.	O
</s>
