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.

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.

Reelism is a tongue-in-cheek variation on the "invasion" gameplay. It offers large, wide-open maps in which random monsters and weapons will constantly spawn during themed rounds. The "reel" mechanism also provide other game-changing effects which can help or, usually, hinder the players. Everything is filled with homages to classic gaming, in-jokes, and all-around silliness. The extreme randomness of the mod makes the gameplay rather unpredictable, since it is possible to obtain extremely unfair combinations as well as ridiculously easy ones.

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.

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.

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.

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.

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.

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.

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

t's more than just a reskin of Nazis. Really, apart from the bullet tracers, this is effectively designed from scratch, using borrowed TekWar enemy sprites to give the mod a sort of Lethal Enforcers/Operation Wolf 3 feel. Terrorists! is intended as a tribute to 1980's and 1990's action movies like Commando, Die Hard, Under Siege, Total Recall, and The Terminator. The focus here is on giving you all the tools you need to become your own Man of Action.

A standalone freeware First-Person Shooter powered by ZDoom.

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.

ECWolf is an advanced source port for Wolfenstein 3D, Spear of Destiny, and Super 3D Noah's Ark based off of the Wolf4SDL code base. ECWolf pulls a substantial amount of code from ZDoom and aims to provide a wide array of mod editing capabilities without the need to modify the source code. For players, ECWolf provides many useful features such as better control binding, support for wide screen resolutions, and unlimited save slots.

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.

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.