<s>
Doom	B-Application
(	O
stylized	O
as	O
DOOM	B-Application
)	O
is	O
a	O
video	O
game	O
series	O
and	O
media	O
franchise	O
created	O
by	O
John	O
Carmack	O
,	O
John	O
Romero	O
,	O
Adrian	O
Carmack	O
,	O
Kevin	O
Cloud	O
,	O
and	O
Tom	O
Hall	O
.	O
</s>
<s>
The	O
series	O
usually	O
focuses	O
on	O
the	O
exploits	O
of	O
an	O
unnamed	O
space	O
marine	O
(	O
often	O
referred	O
to	O
as	O
Doomguy	O
or	O
Doom	B-Application
Slayer	O
)	O
operating	O
under	O
the	O
auspices	O
of	O
the	O
Union	B-Application
Aerospace	I-Application
Corporation	I-Application
(	O
UAC	O
)	O
,	O
who	O
fights	O
hordes	O
of	O
demons	B-Operating_System
and	O
the	O
undead	O
in	O
order	O
to	O
save	O
Earth	O
from	O
an	O
apocalyptic	O
invasion	O
.	O
</s>
<s>
The	O
original	O
Doom	B-Application
is	I-Application
considered	O
one	O
of	O
the	O
first	O
pioneering	O
first-person	O
shooter	O
games	O
,	O
introducing	O
to	O
IBM-compatible	O
computers	O
features	O
such	O
as	O
3D	O
graphics	O
,	O
third-dimension	O
spatiality	O
,	O
networked	O
multiplayer	O
gameplay	O
,	O
and	O
support	O
for	O
player-created	O
modifications	O
with	O
the	O
Doom	B-Application
WAD	O
format	O
.	O
</s>
<s>
Over	O
10	O
million	O
copies	O
of	O
games	O
in	O
the	O
Doom	B-Application
series	I-Application
have	O
been	O
sold	O
;	O
the	O
series	O
has	O
spawned	O
numerous	O
sequels	O
,	O
novels	O
,	O
comic	O
books	O
,	O
board	O
games	O
,	O
and	O
film	O
adaptations	O
.	O
</s>
<s>
The	O
Doom	B-Application
video	O
games	O
consist	O
of	O
first-person	O
shooters	O
in	O
which	O
the	O
player	O
controls	O
an	O
unnamed	O
space	O
marine	O
commonly	O
referred	O
to	O
as	O
Doomguy	O
;	O
in	O
the	O
2016	O
series	O
,	O
the	O
protagonist	O
is	O
called	O
the	O
"	O
Doom	B-Application
Slayer	O
"	O
or	O
just	O
"	O
Slayer	O
"	O
.	O
</s>
<s>
The	O
player	O
battles	O
the	O
forces	O
of	O
Hell	O
,	O
consisting	O
of	O
demons	B-Operating_System
and	O
the	O
undead	O
.	O
</s>
<s>
Outside	O
of	O
combat	O
mechanics	O
,	O
Doom	B-Application
levels	O
often	O
feature	O
mazes	O
,	O
coloured	O
key	O
cards	O
and	O
hidden	O
areas	O
.	O
</s>
<s>
The	O
development	O
of	O
the	O
original	O
Doom	B-Application
started	O
in	O
1992	O
,	O
when	O
John	O
Carmack	O
developed	O
a	O
new	O
game	O
engine	O
,	O
the	O
Doom	B-Application
engine	I-Application
,	O
while	O
the	O
rest	O
of	O
the	O
id	O
Software	O
team	O
finished	O
the	O
Wolfenstein	B-Application
3D	I-Application
prequel	O
,	O
Spear	B-Application
of	I-Application
Destiny	I-Application
.	O
</s>
<s>
The	O
game	O
launched	O
in	O
an	O
episodic	O
format	O
in	O
1993	O
,	O
with	O
the	O
first	O
episode	O
available	O
as	O
shareware	B-License
and	O
two	O
more	O
episodes	O
available	O
by	O
mail	O
order	O
.	O
</s>
<s>
The	O
term	O
"	O
Doom	B-Application
clone	O
"	O
became	O
the	O
name	O
for	O
new	O
genre	O
now	O
known	O
as	O
first-person	O
shooters	O
for	O
several	O
years	O
.	O
</s>
<s>
Doom	B-Application
II	I-Application
:	I-Application
Hell	I-Application
on	I-Application
Earth	I-Application
was	O
released	O
in	O
1994	O
in	O
a	O
commercial	O
format	O
.	O
</s>
<s>
The	O
game	O
was	O
followed	O
by	O
an	O
expansion	O
in	O
1995	O
,	O
titled	O
Master	B-Application
Levels	I-Application
for	I-Application
Doom	I-Application
II	I-Application
,	O
which	O
added	O
20	O
additional	O
levels	O
.	O
</s>
<s>
The	O
first	O
of	O
these	O
was	O
Final	B-Application
Doom	I-Application
,	O
which	O
featured	O
64	O
levels	O
based	O
on	O
the	O
Doom	B-Application
II	I-Application
engine	O
,	O
organised	O
into	O
two	O
episodes	O
.	O
</s>
<s>
TNT	B-Application
:	I-Application
Evilution	I-Application
was	O
developed	O
by	O
the	O
modding	O
group	O
TeamTNT	O
and	O
completed	O
in	O
November	O
1995	O
,	O
while	O
the	O
second	O
episode	O
The	B-Application
Plutonia	I-Application
Experiment	I-Application
was	O
developed	O
by	O
TNT	O
's	O
Dario	O
and	O
Milo	O
Casali	O
and	O
completed	O
in	O
January	O
1996	O
.	O
</s>
<s>
Midway	O
Games	O
developed	O
Doom	B-Application
64	I-Application
under	O
id	O
supervision	O
for	O
release	O
in	O
1997	O
.	O
</s>
<s>
Id	O
did	O
not	O
allow	O
the	O
title	O
to	O
be	O
called	O
Doom	B-Application
3	I-Application
,	O
as	O
the	O
name	O
was	O
being	O
reserved	O
for	O
a	O
potential	O
return	O
to	O
the	O
franchise	O
after	O
the	O
development	O
of	O
Quake	O
.	O
</s>
<s>
The	O
troubled	O
development	O
of	O
Quake	O
had	O
resulted	O
in	O
major	O
staffing	O
changes	O
at	O
id	O
by	O
2000	O
,	O
with	O
a	O
number	O
of	O
key	O
figures	O
from	O
the	O
development	O
of	O
Doom	B-Application
having	O
departed	O
.	O
</s>
<s>
In	O
the	O
interim	O
,	O
the	O
company	O
had	O
hired	O
former	O
Doom	B-Application
modder	O
Tim	O
Willits	O
.	O
</s>
<s>
By	O
2000	O
a	O
new	O
non-Doom	O
game	O
was	O
being	O
designed	O
,	O
but	O
id	O
staff	O
had	O
a	O
"	O
lack	O
of	O
enthusiasm	O
"	O
for	O
the	O
project	O
,	O
and	O
strongly	O
desired	O
to	O
remake	O
the	O
original	O
Doom	B-Application
instead	O
.	O
</s>
<s>
John	O
Carmack	O
,	O
among	O
others	O
,	O
announced	O
internally	O
that	O
they	O
were	O
working	O
on	O
a	O
Doom	B-Application
game	I-Application
-	O
and	O
would	O
continue	O
to	O
do	O
so	O
unless	O
the	O
company	O
fired	O
them	O
.	O
</s>
<s>
The	O
title	O
was	O
unveiled	O
later	O
that	O
year	O
as	O
Doom	B-Application
3	I-Application
.	O
</s>
<s>
Using	O
the	O
new	O
id	B-Application
Tech	I-Application
4	I-Application
engine	O
,	O
numerous	O
technical	O
improvements	O
were	O
made	O
over	O
the	O
classic	O
series	O
,	O
allowing	O
greater	O
realism	O
and	O
interactivity	O
.	O
</s>
<s>
At	O
the	O
time	O
,	O
it	O
was	O
the	O
first	O
Doom	B-Application
title	O
in	O
seven	O
years	O
,	O
and	O
helped	O
renew	O
interest	O
in	O
the	O
franchise	O
.	O
</s>
<s>
An	O
expansion	O
,	O
Doom	B-Application
3	I-Application
:	I-Application
Resurrection	I-Application
of	I-Application
Evil	I-Application
was	O
released	O
in	O
2005	O
.	O
</s>
<s>
A	O
2012	O
"	O
BFG	B-Application
Edition	I-Application
"	O
featured	O
both	O
previous	O
releases	O
along	O
with	O
a	O
new	O
expansion	O
entitled	O
The	O
Lost	O
Mission	O
.	O
</s>
<s>
Doom	B-Application
4	I-Application
entered	O
development	O
in	O
the	O
mid	O
2000s	O
alongside	O
Rage	B-Application
,	O
with	O
the	O
new	O
Doom	B-Application
title	O
initially	O
planned	O
as	O
a	O
rework	O
of	O
Doom	B-Application
II	I-Application
.	O
</s>
<s>
Response	O
to	O
preview	O
material	O
was	O
negative	O
,	O
with	O
fans	O
nicknaming	O
the	O
project	O
"	O
Call	O
of	O
Doom	B-Application
"	O
,	O
after	O
a	O
perceived	O
similarity	O
to	O
the	O
Call	B-Application
of	I-Application
Duty	I-Application
franchise	O
.	O
</s>
<s>
Bethesda	O
marketing	O
vice	O
president	O
Pete	O
Hines	O
stated	O
in	O
retrospect	O
that	O
"	O
it	O
was	O
n't	O
Doom	B-Application
enough	O
"	O
.	O
</s>
<s>
After	O
Rage	B-Application
was	O
not	O
as	O
successful	O
as	O
hoped	O
,	O
publisher	O
ZeniMax	O
requested	O
a	O
reboot	O
of	O
Doom	B-Application
4	I-Application
and	O
moved	O
the	O
Rage	B-Application
staff	O
over	O
to	O
the	O
new	O
project	O
.	O
</s>
<s>
The	O
period	O
saw	O
the	O
release	O
of	O
several	O
spinoffs	O
for	O
mobile	B-Application
platforms	O
.	O
</s>
<s>
These	O
included	O
Doom	B-Language
RPG	I-Language
(	O
2005	O
)	O
,	O
Doom	B-Application
II	I-Application
RPG	I-Application
(	O
2009	O
)	O
,	O
and	O
Doom	B-Application
Resurrection	I-Application
(	O
2009	O
)	O
.	O
</s>
<s>
Additionally	O
,	O
the	O
2010	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
re-release	O
of	O
Doom	B-Application
II	I-Application
featured	O
a	O
new	O
expansion	O
entitled	O
No	O
Rest	O
for	O
the	O
Living	O
,	O
which	O
was	O
developed	O
by	O
Nerve	O
Software	O
.	O
</s>
<s>
This	O
was	O
structured	O
in	O
a	O
similar	O
manner	O
to	O
classic	O
Doom	B-Application
chapters	O
,	O
with	O
eight	O
primary	O
levels	O
and	O
one	O
secret	O
level	O
.	O
</s>
<s>
This	O
release	O
was	O
packaged	O
with	O
the	O
BFG	B-Application
Edition	I-Application
of	O
Doom	B-Application
3	I-Application
in	O
2012	O
.	O
</s>
<s>
After	O
the	O
2013	O
scrapping	O
of	O
the	O
Doom	B-Application
4	I-Application
project	O
,	O
Willits	O
stated	O
that	O
the	O
next	O
game	O
in	O
the	O
Doom	B-Application
series	I-Application
was	O
still	O
the	O
team	O
's	O
focus	O
.	O
</s>
<s>
The	O
project	O
was	O
announced	O
as	O
Doom	B-Application
in	O
2014	O
,	O
and	O
was	O
released	O
to	O
generally	O
positive	O
reception	O
in	O
2016	O
.	O
</s>
<s>
The	O
2016	O
series	O
was	O
not	O
originally	O
described	O
as	O
a	O
continuation	O
or	O
origin	O
story	O
of	O
earlier	O
games	O
,	O
however	O
plot	O
details	O
in	O
the	O
sequel	O
Doom	B-Application
Eternal	I-Application
and	O
commentary	O
from	O
Martin	O
would	O
later	O
describe	O
it	O
as	O
a	O
continuation	O
of	O
the	O
classic	O
series	O
.	O
</s>
<s>
The	O
2020	O
re-release	O
of	O
Doom	B-Application
64	I-Application
included	O
an	O
expansion	O
entitled	O
The	O
Lost	O
Levels	O
,	O
intended	O
"	O
to	O
connect	O
'	O
old	O
 '	O
Doom	B-Application
to	O
'	O
new	O
 '	O
Doom	B-Application
"	O
.	O
</s>
<s>
A	O
VR	O
spinoff	O
entitled	O
Doom	B-Application
VFR	I-Application
was	O
released	O
in	O
2017	O
to	O
generally	O
positive	O
reception	O
,	O
with	O
reviewers	O
discussing	O
the	O
movement	O
controls	O
in	O
particular	O
-	O
which	O
were	O
well	O
made	O
albeit	O
hidden	O
behind	O
menus	O
.	O
</s>
<s>
The	O
game	O
would	O
be	O
the	O
last	O
Doom	B-Application
title	O
under	O
Willits	O
 '	O
leadership	O
,	O
ahead	O
of	O
his	O
departure	O
in	O
2019	O
.	O
</s>
<s>
2018	O
marked	O
the	O
25th	O
anniversary	O
of	O
the	O
franchise	O
,	O
and	O
saw	O
the	O
Doom	B-Application
Slayer	O
included	O
as	O
a	O
playable	O
character	O
in	O
id	O
Software	O
's	O
Quake	B-Application
Champions	I-Application
.	O
</s>
<s>
That	O
year	O
,	O
John	O
Romero	O
announced	O
Sigil	B-Application
,	O
an	O
unofficial	O
"	O
fifth	O
episode	O
"	O
of	O
the	O
original	O
1993	O
game	O
.	O
</s>
<s>
While	O
Sigil	B-Application
was	O
developed	O
independently	O
,	O
Bethesda	O
added	O
the	O
episode	O
to	O
the	O
console	O
ports	O
of	O
Doom	B-Application
as	O
a	O
free	O
patch	O
in	O
October	O
,	O
alongside	O
the	O
two	O
chapters	O
of	O
Final	B-Application
Doom	I-Application
.	O
</s>
<s>
The	O
next	O
main	O
entry	O
in	O
the	O
franchise	O
,	O
Doom	B-Application
Eternal	I-Application
,	O
was	O
directed	O
by	O
Hugo	O
Martin	O
and	O
released	O
in	O
2020	O
.	O
</s>
<s>
The	O
game	O
was	O
made	O
in	O
id	B-Operating_System
Tech	I-Operating_System
7	I-Operating_System
,	O
which	O
afforded	O
numerous	O
technical	O
improvements	O
over	O
the	O
id	B-Operating_System
Tech	I-Operating_System
6	I-Operating_System
engine	O
used	O
by	O
its	O
predecessor	O
.	O
</s>
<s>
In	O
March	O
2022	O
,	O
John	O
Romero	O
released	O
a	O
new	O
Doom	B-Application
II	I-Application
level	O
entitled	O
One	O
Humanity	O
.	O
</s>
<s>
The	O
level	O
was	O
the	O
first	O
for	O
Doom	B-Application
II	I-Application
designed	O
by	O
Romero	O
since	O
1994	O
,	O
and	O
raised	O
25,000	O
euros	O
by	O
March	O
7	O
.	O
</s>
<s>
A	O
spin-off	O
for	O
mobile	B-Application
,	O
Mighty	O
Doom	B-Application
,	O
was	O
released	O
in	O
March	O
2023	O
.	O
</s>
<s>
In	O
March	O
2021	O
,	O
Hugo	O
Martin	O
discussed	O
some	O
directions	O
future	O
Doom	B-Application
titles	O
could	O
take	O
,	O
discussing	O
time	O
travel	O
or	O
a	O
game	O
set	O
in	O
the	O
time	O
span	O
between	O
Doom	B-Application
64	I-Application
and	O
Doom	B-Application
(	O
2016	O
)	O
,	O
when	O
the	O
Doom	B-Application
Slayer	O
"	O
first	O
came	O
to	O
that	O
place	O
with	O
the	O
Sentinels	O
,	O
almost	O
like	O
a	O
more	O
medieval	O
setting	O
"	O
.	O
</s>
<s>
Romero	O
confirmed	O
in	O
August	O
2021	O
that	O
a	O
second	O
Sigil	B-Application
expansion	O
using	O
the	O
Doom	B-Application
II	I-Application
engine	O
was	O
in	O
development	O
.	O
</s>
<s>
A	O
set	O
of	O
four	O
novels	O
based	O
on	O
Doom	B-Application
were	O
written	O
by	O
Dafydd	O
ab	O
Hugh	O
and	O
Brad	O
Linaweaver	O
,	O
and	O
were	O
published	O
between	O
June	O
1995	O
and	O
January	O
1996	O
by	O
Pocket	O
Books	O
.	O
</s>
<s>
In	O
2008	O
,	O
a	O
new	O
series	O
of	O
Doom	B-Application
novels	O
by	O
Matthew	O
J	O
.	O
Costello	O
,	O
an	O
author	O
who	O
had	O
worked	O
on	O
the	O
story	O
and	O
scripts	O
for	O
Doom	B-Application
3	I-Application
and	O
Resurrection	B-Application
of	I-Application
Evil	I-Application
,	O
were	O
published	O
.	O
</s>
<s>
The	O
series	O
of	O
books	O
aim	O
to	O
novelize	O
the	O
story	O
of	O
Doom	B-Application
3	I-Application
,	O
with	O
the	O
first	O
installment	O
,	O
Doom	B-Application
3	I-Application
:	O
Worlds	O
on	O
Fire	O
,	O
published	O
on	O
February	O
26	O
,	O
2008	O
.	O
</s>
<s>
The	O
second	O
book	O
in	O
the	O
series	O
,	O
Doom	B-Application
3	I-Application
:	O
Maelstrom	O
,	O
was	O
released	O
in	O
March	O
2009	O
.	O
</s>
<s>
In	O
2004	O
,	O
a	O
board	O
game	O
designed	O
by	O
Kevin	O
Wilson	O
and	O
published	O
by	O
Fantasy	O
Flight	O
Games	O
titled	O
Doom	B-Application
:	O
The	O
Boardgame	O
was	O
released	O
.	O
</s>
<s>
In	O
2020	O
,	O
Critical	O
Role	O
published	O
a	O
fifth	O
edition	O
Dungeons	O
&	O
Dragons	O
module	O
entitled	O
Doom	B-Application
Eternal	I-Application
:	O
Assault	O
on	O
Amaros	O
Station	O
.	O
</s>
<s>
In	O
2005	O
,	O
Universal	O
Pictures	O
released	O
the	O
first	O
live-action	O
film	O
adaptation	O
,	O
titled	O
Doom	B-Application
,	O
which	O
starred	O
Karl	O
Urban	O
and	O
Dwayne	O
Johnson	O
.	O
</s>
<s>
In	O
2019	O
,	O
Universal	O
released	O
a	O
second	O
live-action	O
film	O
adaptation	O
direct-to-video	O
,	O
titled	O
Doom	B-Application
:	O
Annihilation	O
starring	O
Amy	O
Manson	O
.	O
</s>
<s>
In	O
1999	O
,	O
Next	O
Generation	O
listed	O
the	O
Doom	B-Application
series	I-Application
as	O
number	O
25	O
on	O
their	O
"	O
Top	O
50	O
Games	O
of	O
All	O
Time	O
,	O
"	O
commenting	O
that	O
,	O
"	O
despite	O
the	O
graphic	O
advances	O
since	O
Doom	B-Application
was	O
released	O
,	O
the	O
pixilated	O
Barons	O
of	O
Hell	O
and	O
Cyber	O
Demons	B-Operating_System
still	O
rank	O
as	O
some	O
of	O
the	O
scariest	O
things	O
that	O
can	O
grace	O
your	O
screen.	O
"	O
</s>
<s>
The	O
original	O
Doom	B-Application
sold	O
3.5	O
million	O
physical	O
copies	O
and	O
1.15	O
million	O
shareware	B-License
copies	O
from	O
its	O
1993	O
release	O
up	O
through	O
1999	O
.	O
</s>
<s>
Doom	B-Application
II	I-Application
sold	O
1.55	O
million	O
copies	O
of	O
all	O
types	O
in	O
the	O
United	O
States	O
during	O
the	O
same	O
period	O
,	O
with	O
about	O
a	O
quarter	O
of	O
that	O
number	O
also	O
sold	O
in	O
Europe	O
,	O
a	O
total	O
of	O
some	O
5-6	O
million	O
sales	O
for	O
the	O
original	O
duology	O
.	O
</s>
<s>
Doom	B-Application
3	I-Application
sold	O
3.5	O
million	O
copies	O
along	O
with	O
many	O
copies	O
of	O
the	O
expansion	O
pack	O
Resurrection	B-Application
of	I-Application
Evil	I-Application
from	O
its	O
2004	O
release	O
up	O
through	O
2007	O
,	O
making	O
it	O
the	O
most	O
successful	O
game	O
in	O
the	O
series	O
at	O
that	O
point	O
.	O
</s>
<s>
The	O
sales	O
of	O
Doom	B-Application
64	I-Application
were	O
not	O
disclosed	O
.	O
</s>
