Popular games built on game engine ZDoom

In development since 2010, the 18th Cacoward winner and Moddb 2012 MOTY Editors Choice of Creativity Award Brütal Doom takes Doom into a whole new level. It makes the game much more violent than before. There's much more blood, plus it adds unique gibs, death animations, dismemberments, headshots, executions, fire and explosion particles, flares, and much more. The whole world becomes more real and interactive.You can kick severed limbs and heads (and sometimes, use it to activate some traps in the map earlier, or even kick them against enemies to do some damage), you can shoot enemies' heads to deal more damage (and cause more gruesome deaths) you can destroy most things in the the scenario (trees, lamps, hanging bodies, etc), you can paint the floor, the walls, and even the ceiling with blood, you can push the explosive barrels to make traps, or grab them and use like an explosive weapon, you can silently take down enemies from behind and perform stealth kills, the chainsaw actually cuts the enemies in two. When you find the berserk pack and get super strength, you can perform cinematic executions and RIP AND TEAR your foes with your bare hands. Some enemies will scream in anguish and try to crawl away when near death, and they can be used as human shields, and much, much more. Everything in Brutal Doom is extremely intense. Everything sounds louder, looks bigger, moves faster, and hits harder. You can even fell the impact of explosions. Enemies are harder and smarter, and weapons and explosions are much louder. Your weapons have been upgraded to a deadly arsenal, completely throwing the vanilla Doom's "progressive weapon system" through the window. Every weapon is powerful and have it's pros and cons, a a weapon will never be outclassed when you find a new weapon, but only find a different use for different situations, making Brutal Doom more balanced and more strategic than Vanilla gameplay. You have new abilities too. With any weapon selected, you can press Q (default bind) to kick enemies at close range and send them away. Every new feature and weapon is cautiously balanced, and added in a way that makes sense in the universe of Doom. Many of the features can also be disabled/enabled to provide the best personal experience possible.

The Sigil Megawad is free download created by John Romero for the original 1993 Doom. It contains nine single-player and nine deathmatch levels. The free megawad will be released in mid- May 2019 and requires players own the original 1993 registered version of Doom in order to play. The SIGIL Megawad is the spiritual successor to the fourth episode of Doom, and picks up where the original left off.

Grezzo 2 is a first-person shooter video game developed by Italian game designer Nicola Piro and released in 2012. The game is a total conversion modification of the 1993 video game Doom and its development began in the early 2000s, with the version called Grezzo 1, when Nicola Piro attended high school. The plot follows the adventure of pagan farmer Piro which, annoyed and disgusted by Christianity, plans to kill Jesus Christ to prevent the rise of his religious phenomenon. Gameplay requires the player to face various levels, defeating enemies and bosses and using a wide range of weapons. Many well-known personalities of the culture of Italy appear in the game, as well as references to extremely satirized social, political and religious issues of the country. Following the 2012 release, Grezzo 2 received significant attention, both inside and outside of its country of origin, due to its extremely blasphemous, vulgar and violent content.

Valiant is a 32-level megawad for MBF-compatible source ports, created by Paul DeBruyne (skillsaw). It features extensive DeHackEd work in order to provide an enhanced roster of enemies, most of them adapted from the Realm 667 "Beastiary".

Scythe 2 is a 32-level megawad for Doom II. Released by Erik Alm in June of 2005. It was re-released July 10th 2009 with the three missing levels. It has been regarded by many as a spiritual successor to Scythe rather than a direct sequel. While the original featured small, action-packed levels, Scythe 2 is filled with large, complex and detailed maps, and is sometimes compared to the style of Alien Vendetta.

Dark 7 (sometimes styled Dark7) is a ZDoom mod created by Bryant Robinson (Gunrock).

Vanguard is a episode replacement PWAD for Doom II, by Paul DeBruyne (skillsaw). It is a winner of 2011's 18th Annual Cacowards. The mapset requires a Boom-compatible source port. It contains 12 maps and a humorous "bonus" thirteenth level. Inspiration sources include Speed of Doom, Scythe 2, Alien Vendetta, and The Plutonia Experiment. It was originally meant to be a "32-level speedmapped megawad inspired by Speed of Doom's development cycle and Scythe 2's episodic structure."

Hurt hellspawn with most overpowered and ludicrous arsenal in history, such as portable tank cannons, borscht-spewing lazer cannons, medieval maces, slamming ammo packs in monsters face (and then exploding it), fists made of shovels, gesture-coming-true device (TM) (aka. shooting fists), fart mines, inconspicuous superpowered revolvers, huge nuclear-powered energy cannons, miniguns shooting fighter jets that drop bombs!... and of course, nukes coming in all kinds of flavors (sometimes in a moment you would rather not expect a one). And that all is just the tip of the iceberg of madness that is Russian Overkill. If you feel like going nuts after a day of work or school and want the stress out of your system - this mod is for you.

Scourge of Viscerus is 7-level hub-based mod for Hexen. It was created by Matt Tropiano (MTrop) and released on July 1, 2010. Set several years after the defeat of the Deathkings, the players must venture out to stop a demon named Viscerus, who seeks to resurrect them in order to conquer the world of Cronos. Scourge of Viscerus features new boss enemies and new music tracks.

Cold as Hell is a total conversion for Doom II set in a fictional military research facility in Greenland in the 1950's.

Nocturne in Yellow is a fantasy medieval first-person shooter using an extremely modified version of the idtech1 engine, also known as the Doom engine. In it, you play as a dude marching through ancient castles with the realization that every myth and story ever made in the history of man is true and all of them are pissed off at you for having a pulse and four functional limbs. You utilize a bow, some grenades, and a spear in order to fend them off, wandering deeper to stop the rise of the dark lord threatening to spread death, destruction, and hurt feelings all around. Being a first-person shooter, you step into the eyes of a protagonist and wield whatever weapon he was smart enough to grab before wandering off on this death quest. Primary fire, well, fires whatever weapon you're using, while secondary fire lobs a grenade at whatever looks funny at you. Run around through seven maps, picking up items and stabbing dudes before reaching a boss at the end, and then stab the boss. Boss drops artifact, pick up artifact for more powers for your bow, and then move on to the next level to repeat as needed. After you do this seven times, you win! If you play on Story Mode, occasionally there will be long walls of text about people talking about their feelings. If you play on Arcade mode, all of the boring text will be stripped out, leaving you free to stab enemies without hearing about their failed love life.

Zen Dynamics is a 2005 ZDoom partial conversion created by Xaser. It was created to demonstrate an implementation of weapon reloading in ZDoom, 7 years before it was officially and fully implemented as a weapon state. The game also includes features such selecting and deselecting frames, cutscenes, new monsters, new levels, new sounds, and 13 new weapons. Most of the levels are based on unfinished levels created by Malcolm Sailor which were released in 2000 in the "Assorted Scraps and Leftovers" collection. At the 13th Annual Cacowards, this WAD was listed as a runner-up alongside Oniria.

Chibi Rebellion is a SD (Super Deformed) take on the Star Wars universe. Players will go through a hub of randomly selected maps, blasting enemies, solving simple puzzles, and otherwise having fun. Chibi Rebellion falls somewhere between Lego Star Wars and Yoda Stories, so if you didn't like either one of those, you probably won't enjoy this. There is no gore in Chibi Rebellion, enemies typically leave behind a bouncing helmet to signify their passing.

Harmony is a 11-level stand-alone total conversion, created by Thomas van der Velden (t.v.) and released after five years of development. In its updated 1.1 version, it is recognized as an IWAD by ZDoom 2.4.0 and newer. The soundtrack consists of three songs from Kyū's album "The Edge" (2009), specifically track #6 ("Untitled", used on MAP02, MAP03, MAP10 and MAP11), #7 ("Mercury Stripes, Blue Mess", used on MAP01, MAP04, MAP05, MAP08 and MAP09) and #10 ("The Edge", used on MAP06, MAP07, and the intermission, endgame and title screens). James Paddock (Jimmy) later created an optional MIDI pack providing a new, original soundtrack composed specifically for Harmony.

Temple of the Lizardmen is a Doom II mod intended to blend Doom's gameplay with Unreal in an ancient temple themed mapset.

A standalone freeware First-Person Shooter powered by ZDoom.

Daedalus: Alien Defense is a 32-level megawad released in 2003 by TeamTNT as a sequel to Icarus: Alien Vanguard. Originally developed as "Doom 2000", it was the first ZDoom mod created by TeamTNT.

The City of the Damned is a single-level PWAD for Doom II that requires the ZDoom source port. It was designed by Daniel Gimmer (Tormentor667) in 2004, last updated in 2005, and uses an unnamed music track by Lexus Alyus. The par time defined in MAPINFO is 23:15. In 2020 it received a v2.0 update for GZDoom, and a sequel called The City of the Damned: Apocalypse was released in 2007.

An influential Doom megawad known for its detailed and challenging level design. Alien Vendetta (aka AV) is a megawad that contains 32 new and hard levels. The levels are full of details and monsters. It is also one of the few PWADs that are allowed to be used in Compet-N speed runs. There have been two separate releases of Alien Vendetta. The second release, made when it was selected for usage on Compet-N, made various changes to almost all of the levels; the biggest change is the replacement of MAP25: Valley of Echoes with another map, MAP24: Clandestine Complex, as well as the relocation of the former MAP24: Demonic Hordes to MAP25.

MassMouth must embark on a journey to save his boss, The Worm, who is kidnapped by a mysterious group of aliens.

Stardate 20X6 is a set of eight Boom-compatible maps released by Zachary Stephens (Ribbiks) in 2013. The WAD is notable for its use of the colour purple, which replaces many of the green colours in the palette. Development started at the end of 2012, continuing for six months until it was uploaded to the idgames archive on 2 June, 2013. The WAD received one of the 20th Annual Cacowards.

Saturnine Chapel, also known as MNENMA 0 is a single-level PWAD for Doom II that requires a Boom-compatible source port to play. It was designed by Darryl Steffen (dobu gabu maru) and uses the music track "Egypt," by Zachary Stephens (Ribbiks). It received one of the 2017 Cacowards.

A fast paced gameplay mod for the original Doom games, created by TerminusEst13, revolving heavily around melee combat