<s>
Angband	B-Application
is	O
a	O
dungeon-crawling	O
roguelike	O
video	O
game	O
derived	O
from	O
Umoria	B-Device
.	O
</s>
<s>
It	O
is	O
based	O
on	O
the	O
writings	O
of	O
J	O
.	O
R	O
.	O
R	O
.	O
Tolkien	O
,	O
in	O
which	O
Angband	B-Application
is	O
the	O
fortress	O
of	O
Morgoth	O
.	O
</s>
<s>
The	O
current	O
version	O
of	O
Angband	B-Application
is	O
available	O
for	O
all	O
major	O
operating	O
systems	O
,	O
including	O
Unix	B-Application
,	O
Windows	B-Application
,	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
,	O
and	O
Android	B-Application
.	O
</s>
<s>
The	O
goal	O
of	O
Angband	B-Application
is	O
to	O
survive	O
100	O
floor	O
levels	O
of	O
the	O
fortress	O
Angband	B-Application
in	O
order	O
to	O
defeat	O
Morgoth	O
.	O
</s>
<s>
Angband	B-Application
gameplay	O
emphasises	O
combat	O
and	O
careful	O
resource	O
management	O
.	O
</s>
<s>
Although	O
Angband	B-Application
records	O
the	O
player	O
's	O
progress	O
to	O
a	O
save	O
file	O
,	O
it	O
does	O
not	O
allow	O
one	O
to	O
resume	O
a	O
saved	O
game	O
in	O
which	O
the	O
player	O
character	O
has	O
already	O
been	O
beaten	O
.	O
</s>
<s>
The	O
first	O
version	O
of	O
Angband	B-Application
was	O
created	O
by	O
Alex	B-Application
Cutler	I-Application
and	O
Andy	O
Astrand	O
at	O
the	O
University	O
of	O
Warwick	O
in	O
1990	O
.	O
</s>
<s>
They	O
wanted	O
to	O
expand	O
the	O
game	O
Umoria	B-Device
by	O
adding	O
items	O
,	O
monsters	O
,	O
and	O
features	O
.	O
</s>
<s>
They	O
released	O
"	O
2.4.frog_knows	O
"	O
,	O
which	O
was	O
enhanced	O
by	O
others	O
and	O
widely	O
ported	O
to	O
non-Unix	O
platforms	O
.	O
</s>
<s>
Following	O
their	O
departure	O
,	O
the	O
later	O
principals	O
of	O
Angband	B-Application
have	O
included	O
Charles	O
Swiger	O
,	O
Ben	O
Harrison	O
,	O
and	O
Robert	O
Rühlmann	O
.	O
</s>
<s>
Harrison	O
was	O
the	O
maintainer	O
responsible	O
for	O
the	O
"	O
Great	O
Code	O
Cleanup	O
"	O
,	O
modularizing	O
,	O
extending	O
,	O
and	O
greatly	O
improving	O
the	O
readability	O
of	O
the	O
Angband	B-Application
source	O
code	O
.	O
</s>
<s>
He	O
also	O
introduced	O
Lua	B-Language
,	O
a	O
lightweight	O
scripting	O
language	O
,	O
with	O
the	O
intention	O
of	O
simplifying	O
development	O
of	O
both	O
the	O
main	O
game	O
and	O
its	O
variants	O
.	O
</s>
<s>
The	O
Angband	B-Application
community	O
,	O
however	O
,	O
did	O
not	O
generally	O
embrace	O
the	O
addition	O
of	O
scripting	O
,	O
with	O
many	O
expressing	O
confusion	O
over	O
its	O
usage	O
,	O
and	O
it	O
was	O
therefore	O
later	O
removed	O
.	O
</s>
<s>
The	O
original	O
Moria/Angband	O
software	B-License
license	I-License
allowed	O
distribution	O
of	O
the	O
game	O
,	O
but	O
only	O
does	O
so	O
if	O
"	O
not	O
for	O
profit	O
"	O
,	O
which	O
precludes	O
packaging	O
with	O
many	O
Linux	B-Application
distributions	O
or	O
inclusion	O
within	O
a	O
magazine	O
cover	O
disc	O
.	O
</s>
<s>
The	O
license	O
also	O
does	O
not	O
explicitly	O
allow	O
code	O
modification	O
,	O
something	O
which	O
is	O
in	O
practice	O
ignored	O
by	O
the	O
Angband	B-Application
community	O
.	O
</s>
<s>
In	O
light	O
of	O
these	O
perceived	O
issues	O
,	O
an	O
initiative	O
to	O
re-license	O
Angband	B-Application
was	O
therefore	O
started	O
by	O
maintainer	O
Rühlmann	O
in	O
2000	O
.	O
</s>
<s>
This	O
"	O
Angband	B-Application
Open	B-Application
Source	I-Application
Initiative	O
"	O
was	O
designed	O
to	O
make	O
Angband	B-Application
proper	O
Open	B-Application
source	I-Application
under	O
the	O
GPL	B-License
license	I-License
.	O
</s>
<s>
Some	O
loci	O
of	O
Angband	B-Application
discussion	O
are	O
the	O
Usenet	B-Application
newsgroup	I-Application
rec.games.roguelike.angband	O
,	O
the	O
,	O
and	O
the	O
IRC	B-Protocol
channels	O
#angband	O
(	O
on	O
WorldIRC	O
)	O
and	O
#angband	O
-dev	O
(	O
on	O
Freenode	O
)	O
.	O
</s>
<s>
Some	O
players	O
continue	O
to	O
play	O
Angband	B-Application
for	O
several	O
years	O
.	O
</s>
<s>
Among	O
Angband	B-Application
's	O
many	O
derivatives	O
are	O
MAngband	O
(	O
1997	O
)	O
,	O
a	O
multiplayer	O
variant	O
;	O
Zangband	O
(	O
"	O
Zelazny	O
"	O
+	O
"	O
Angband	B-Application
"	O
)	O
(	O
1994	O
)	O
,	O
which	O
incorporates	O
elements	O
of	O
Roger	O
Zelazny	O
's	O
The	O
Chronicles	O
of	O
Amber	O
novels	O
;	O
and	O
Tales	O
of	O
Middle	O
Earth	O
(	O
1998	O
)	O
,	O
a	O
Tolkien-themed	O
game	O
developed	O
from	O
the	O
ZAngband	O
code	B-General_Concept
base	I-General_Concept
.	O
</s>
<s>
Tales	O
of	O
Middle	O
Earth'''s	O
source	O
code	O
and	O
story	O
were	O
later	O
rewritten	O
,	O
and	O
the	O
game	O
became	O
Tales	B-Language
of	I-Language
Maj'Eyal	I-Language
(	O
2012	O
)	O
.	O
</s>
<s>
David	O
Brevik	O
cited	O
Angband	B-Application
's	O
randomized	O
levels	O
and	O
items	O
as	O
a	O
"	O
huge	O
influence	O
"	O
on	O
Diablo	B-Application
and	O
"	O
the	O
model	O
of	O
what	O
we	O
wanted	O
"	O
.	O
</s>
<s>
Ernest	O
Cline	O
's	O
novel	O
Ready	B-Application
Player	I-Application
Two	I-Application
features	O
the	O
dungeon	O
from	O
Angband	B-Application
and	O
"	O
Morgoth	O
's	O
crown	O
"	O
as	O
the	O
location	O
of	O
one	O
of	O
the	O
Seven	O
Shards	O
that	O
the	O
protagonists	O
must	O
collect	O
.	O
</s>
