<s>
DRL	B-Language
(	O
formerly	O
DoomRL	B-Language
)	O
,	O
short	O
for	O
Doom	B-Application
,	O
the	O
Roguelike	O
,	O
is	O
a	O
roguelike	O
video	O
game	O
developed	O
by	O
ChaosForge	O
based	O
on	O
the	O
first-person	O
shooters	O
Doom	B-Application
and	O
Doom	B-Application
II	I-Application
.	O
</s>
<s>
It	O
has	O
been	O
in	O
development	O
since	O
2002	O
,	O
and	O
was	O
released	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
Linux	B-Application
and	O
OS	B-Operating_System
X	I-Operating_System
.	O
</s>
<s>
Following	O
a	O
cease	O
and	O
desist	O
notice	O
from	O
"	O
Doom	B-Application
"	O
trademark	O
owner	O
ZeniMax	O
Media	O
,	O
the	O
game	O
's	O
name	O
was	O
changed	O
to	O
DRL	B-Language
in	O
2016	O
.	O
</s>
<s>
DRL	B-Language
is	O
turn-based	O
,	O
offers	O
a	O
top-down	O
interface	O
formed	O
entirely	O
of	O
ASCII	B-Protocol
characters	I-Protocol
,	O
and	O
features	O
a	O
character	O
leveling	O
system	O
with	O
traits	O
.	O
</s>
<s>
As	O
it	O
is	O
based	O
upon	O
Doom	B-Application
,	O
the	O
game	O
is	O
more	O
fast-paced	O
and	O
combat-oriented	O
than	O
usual	O
for	O
a	O
roguelike	O
,	O
and	O
relies	O
heavily	O
on	O
ranged	O
rather	O
than	O
melee	O
combat	O
.	O
</s>
<s>
As	O
of	O
version	O
0.9.9.6	O
,	O
Derek	O
Yu	O
's	O
graphical	O
tileset	O
is	O
now	O
the	O
game	O
's	O
default	O
,	O
offering	O
an	O
alternative	O
to	O
the	O
more	O
traditional	O
ASCII	B-Protocol
rendering	O
.	O
</s>
<s>
DRL	B-Language
includes	O
the	O
entire	O
Doom	B-Application
soundset	O
and	O
music	O
library	O
,	O
with	O
optional	O
support	O
for	O
high-quality	O
MP3s	B-Application
.	O
</s>
<s>
The	O
game	O
was	O
created	O
by	O
programmer	O
Kornel	O
Kisielewicz	O
with	O
Free	B-Operating_System
Pascal	I-Operating_System
,	O
and	O
uses	O
art	O
by	O
Derek	O
Yu	O
.	O
</s>
<s>
The	O
developers	O
based	O
DRL	B-Language
in	O
the	O
popular	O
first-person	O
shooters	O
Doom	B-Application
and	O
Doom	B-Application
II	I-Application
universe	O
.	O
</s>
<s>
On	O
December	O
2	O
,	O
2016	O
,	O
Kisielewicz	O
received	O
a	O
cease	O
and	O
desist	O
notice	O
from	O
ZeniMax	O
Media	O
,	O
concerning	O
the	O
use	O
of	O
the	O
wordmark	O
"	O
Doom	B-Application
"	O
present	O
on	O
game	O
's	O
website	O
and	O
name	O
,	O
which	O
ZeniMax	O
trademarked	O
worldwide	O
.	O
</s>
<s>
To	O
exclude	O
"	O
Doom	B-Application
"	O
from	O
the	O
game	O
's	O
name	O
,	O
the	O
title	O
was	O
changed	O
to	O
simply	O
DRL	B-Language
on	O
December	O
7	O
,	O
2016	O
.	O
</s>
<s>
In	O
addition	O
,	O
the	O
game	O
was	O
made	O
open	B-Application
source	I-Application
by	O
Kisielewicz	O
on	O
December	O
6	O
,	O
2016	O
.	O
</s>
<s>
Kisielewicz	O
had	O
planned	O
on	O
releasing	O
DoomRL	B-Language
as	O
open-source	B-Application
prior	O
to	O
receiving	O
the	O
notice	O
at	O
the	O
conclusion	O
of	O
an	O
ongoing	O
crowdfunding	O
campaign	O
on	O
Kickstarter	O
for	O
Jupiter	O
Hell	O
,	O
a	O
sequel	O
to	O
DoomRL	B-Language
using	O
the	O
same	O
assets	O
,	O
as	O
a	O
thank-you	O
to	O
his	O
supporters	O
.	O
</s>
<s>
The	O
source	O
code	O
was	O
made	O
available	O
via	O
GitHub	B-Application
under	O
GPL	B-License
2.0	I-License
or	I-License
later	I-License
and	O
the	O
game	O
's	O
assets	O
under	O
the	O
CC	O
BY-SA	O
4.0	O
license	O
.	O
</s>
<s>
Kisielewicz	O
anticipates	O
that	O
the	O
open-source	B-Application
community	O
will	O
be	O
able	O
to	O
provide	O
support	O
and	O
improvements	O
to	O
enhance	O
both	O
DRL	B-Language
and	O
Jupiter	O
Hell	O
.	O
</s>
<s>
For	O
instance	O
,	O
a	O
community	O
source	O
port	O
of	O
DRL	B-Language
to	O
the	O
OpenPandora	B-Device
handheld	B-Application
resulted	O
already	O
three	O
days	O
later	O
.	O
</s>
<s>
In	O
2014	O
DRL	B-Language
was	O
described	O
by	O
PCGamer	O
as	O
"	O
a	O
brilliant	O
mashup	O
of	O
two	O
classics	O
"	O
and	O
named	O
among	O
the	O
"	O
Ten	O
top	O
fan	B-Application
remade	I-Application
classics	O
you	O
can	O
play	O
for	O
free	B-License
right	O
now	O
"	O
.	O
</s>
