Popular games built on game engine ZDoom

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.

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.

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.

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.

HDoom is a pornographic modification, being developed by Mike12 (aka HDoomGuy), for Doom. The modification replaces the game's weapon and enemy animations with hentai, turning most demons into nude female counterparts and adding adult animations for the Doomguy. It also features a work-in-progress visual novel system. Currently, the latest version available is tech demo 9 build.

The independent video game Delaweare is a free ZDoom based first person shooter in which the emphasis is put on visual and audio experiences. The aim of the game is to explore its strange world to collect all music tracks.

Stardate 20X7 is a set of eleven Boom-compatible maps released by Zachary Stephens (Ribbiks) in 2017. It continues the purple theme of Stardate 20X6, with the colour purple this time replacing the blue range of the palette, however it was not initially intended as a sequel.

Assault on Tei Tenga, also known as Tei Tenga, is a hub-based mapset for ZDoom created by Sam Ketner. It is widely considered as the first WAD to use the ZDoom hub system inherited from Hexen, combined with ACS-scripted cutscenes, which was not a simple proof of concept. Due to this, it is listed as one of the Top 100 WADs of All Time by Doomworld. Released on May 21, 1999, it originally received mixed responses, with some community members complaining that extensive scripting interfered with Doom's gameplay. Nevertheless, Tei Tenga has been described as "the wad that got ZDoom on its feet".

MassMouth is an alien from the planet Zeeble (a zeebloid). He has a small, green body with a large mouth. MassMouth is an employee of The Worm, a rich alien with his own personal moon. The Worm employs MassMouth to bring him various valuable items. MassMouth is very well-paid and has his own personal room.

The Wayfarer is not your grandparents' Heretic. It includes a built-in gameplay mod that rebalances the game in ways that are mostly subtle but make the game a lot more engaging to play. Many enemy attacks are more dangerous, and most of the player's weapons are more powerful, allowing certain weapons to have more useful combat niches and eliminating the grindiness associated with vanilla Heretic's weapon/monster balance. The episode also features two new standard enemies, two new artifacts, a new weapon, plenty of custom decorations and textures, and more.

Phobos Mission Control is a single Doom level for limit-removing ports created in 2016 by John Romero as a second warm-up exercise before working on a new FPS game, Blackroom. It is an alternate take on E1M4: Command Control.

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

The most avant-garde Doom will ever get. Obviously not a WAD for everyone, the core target for such a mod is mainly people who are in video game glitches, corruptions and to some extent, creepypastas (whether that love is ironic or not). Nothing works as it is supposed to. You can hardly understand most of the things that are happening to you. Some of the custom monsters (like the hitscanning corrupted pinky) will put you on edge and keep you paranoid about the ruleset of the game. The aesthetic of lilith.pk3 is one of a kind, horribly mangling the rendering engine of old ZDoom beyond belief to disform sprites, textures, text and even sound effects. The end result makes close to no sense, your Doom marine sprite is heavily dislocated and looks more like one of those creatures from Alien than a human being and the list goes on and on. The confused looks obviously doesn't always make for clean or concise gameplay, especially in later levels which crank the confusion up to eleven and manipulate the level geometry to do things you thought weren't possible in the game. Even basic things like crushers, slime pits or a turnstile look horribly out of shape and makes the player uncomfortable. This is essentially what lilith boils down to: an unfamilarity to something we thought we knew by heart, a rising sense of uncomfort as the level design makes less and less sense and offering the player a new perspective on what Doom is. Don't play lilith expecting top-notch Doom gameplay, but play it for the one of a kind experience it offers you. For the better and for the worse, there are no WADs like lilith anywhere and there will never be.

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."

Wolfenstein 3D Total Conversion for Doom is a total conversion of Wolfenstein 3D to the Doom engine. The main objective of the project was to recreate Wolfenstein 3D in a more modern 2.5D engine, while still preserving the original gameplay, weapons, enemies, etc.

Mayhem Mansion is a Doom total conversion project (and standalone on gamejolt) developed by Darsycho. It is inspired by an obscure FPS game known as "Exploding Lips" and uses many resources from the game.

Chex Quest 3 is the newest edition to Chex Quest, a series of comedic sci-fi shooter games. It contains slightly updated versions of the maps from Chex Quest and Chex Quest 2, in addition to new maps.

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.

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".

While driving in the middle of the night, a mysterious figure in the dark wanders into the path of your car, making you turn and crash into a wall, having no way back you begin searching for help, but only for you to find a psychotic infestation...

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.