<s>
DND	B-Application
is	O
a	O
role-playing	O
video	O
games	O
developed	O
by	O
Purdue	O
University	O
student	O
Daniel	O
Lawrence	O
in	O
1977	O
for	O
the	O
Digital	O
Equipment	O
Corporation	O
(	O
DEC	O
)	O
PDP-10	B-Device
mainframe	B-Architecture
computer	I-Architecture
.	O
</s>
<s>
The	O
name	O
DND	B-Application
is	O
derived	O
from	O
the	O
abbreviation	O
"	O
D&D	O
"	O
from	O
the	O
original	O
tabletop	O
role-playing	O
game	O
Dungeons	O
&	O
Dragons	O
.	O
</s>
<s>
After	O
Lawrence	O
re-used	O
code	O
from	O
the	O
game	O
in	O
the	O
1982	O
role-playing	O
game	O
Telengard	B-Application
,	O
DEC	O
ordered	O
DND	B-Application
be	O
removed	O
from	O
their	O
computers	O
to	O
avoid	O
litigation	O
by	O
Telengards	B-Application
publisher	O
.	O
</s>
<s>
DND	B-Application
was	O
one	O
of	O
the	O
earliest	O
role-playing	O
video	O
games	O
,	O
as	O
part	O
of	O
a	O
set	O
of	O
games	O
developed	O
in	O
the	O
1970s	O
based	O
on	O
the	O
1974	O
Dungeons	O
&	O
Dragons	O
.	O
</s>
<s>
DND	B-Application
was	O
written	O
in	O
BASIC	O
for	O
the	O
TOPS-10	B-Operating_System
time-share	O
operating	O
system	O
by	O
Daniel	O
Lawrence	O
,	O
a	O
student	O
at	O
Purdue	O
University	O
,	O
for	O
the	O
Digital	O
Equipment	O
Corporation	O
PDP-10	B-Device
mainframe	B-Architecture
computer	I-Architecture
and	O
released	O
around	O
1977	O
.	O
</s>
<s>
Later	O
the	O
game	O
found	O
its	O
way	O
to	O
DEC	O
and	O
was	O
there	O
rewritten	O
in	O
1983	O
to	O
Pascal	B-Application
.	O
</s>
<s>
DND	B-Application
was	O
one	O
of	O
the	O
earliest	O
role-playing	O
video	O
games	O
,	O
which	O
began	O
to	O
appear	O
around	O
1975	O
,	O
and	O
like	O
DND	B-Application
were	O
largely	O
based	O
on	O
Dungeons	O
&	O
Dragons	O
(	O
1974	O
)	O
.	O
</s>
<s>
Lawrence	O
re-used	O
some	O
of	O
the	O
code	O
for	O
the	O
game	O
for	O
the	O
1982	O
role-playing	O
game	O
Telengard	B-Application
.	O
</s>
<s>
This	O
led	O
to	O
DEC	O
ordering	O
DND	B-Application
to	O
be	O
removed	O
from	O
all	O
DEC	O
computers	O
in	O
September	O
1983	O
to	O
avoid	O
litigation	O
from	O
Telengards	B-Application
publisher	O
,	O
Avalon	O
Hill	O
.	O
</s>
<s>
One	O
such	O
port	O
was	O
to	O
MS-DOS	B-Application
in	O
1984	O
by	O
R.O.	O
</s>
<s>
Software	O
,	O
which	O
sold	O
the	O
game	O
under	O
a	O
US$25	O
shareware	B-License
license	O
without	O
first	O
seeking	O
permission	O
from	O
Avalon	O
Hill	O
or	O
Lawrence	O
.	O
</s>
