Indie games

Indie games are games developed by small teams. For an overview of indie games in general, one may refer to the ; this article is specifically for indie games created with the Doom engine or one of its source ports.

An indie game is a special case of a total conversion. While a total conversion is still meant to be loaded as a mod, and therefore requires the base game data, an indie game is fully standalone and does not require ownership of any other game to be played.

Some indie games utilize (and include) the Freedoom IWAD as a bootstrap for custom content or include a fake IWAD that contain the minimum amount of lumps required to launch a game.

Vanilla
Relatively few indie games target the vanilla Doom engine, since it does not have any provision to support custom IWADs and offer very little ways of customizing the game behavior. The use of DeHackEd offers more possibilities but since distributing a modified copy of the original executable is technically copyright infringement, a standalone game will still have to be distributed with a source port, or only be distributed as game data and leave obtaining the executable to the end user.
 * Chex Quest
 * Hacx
 * REKKR
 * Harmony (utilizes a modified Doom32 executable)

Clones
A few of the vanilla-compatible games are aimed mostly at providing a free/libre clone of a commercial Doom engine game, and therefore do not seek to offer different gameplay but merely original assets allowing to play third-party content made for the original game.
 * Blasphemer
 * Freedoom
 * The People's Doom
 * Zauberer

ZDoom

 * Action Doom 2: Urban Brawl
 * Barista
 * Chex Quest 3
 * Delaweare
 * Foreverhood
 * Harmony
 * Haze (Lost in Cold Haze)
 * Mayhem Mansion

GZDoom

 * The Adventures of Square
 * A Janitor's Nightmare
 * Action Doom 2: Urban Brawl Reloaded
 * Ashes Afterglow
 * Beer Drinkin' Terrorist Hunter
 * Behead the Undead 2: Project Crypt
 * Blood: The Curse Hunter
 * Bloodwar
 * Castlevania: Simon's Destiny
 * The Cenote
 * The Crimson Deed
 * Cursed Maze
 * Decadence: A Tarnished World
 * Daytime Drama (GZDoom, WIGZDoom engine fork)
 * Dismantled
 * Dynamite Duchess
 * Dynamite Duchess 2: Appetite For Detention
 * Dynamite Duchess 3: Carnival Of Souls
 * The Forestale
 * GZ PT
 * Hands of Necromancy (GZDoom, Redemption engine fork)
 * Hedon (GZDoom, hGZDoom engine fork)
 * Hedon Bloodrite (Hedon and Hedon II in one game)
 * Hunter's Moon
 * I.M Meen TC
 * I Am Sakuya: Touhou FPS Game
 * Kid 4 $29.99
 * Lenny!
 * Lycanthorn
 * Lycanthorn II
 * Magical Mary: Redthorn's Family Ransom (modified GZDoom fork)
 * Membrane
 * Memoirs of Magic
 * nu//void
 * Project Osiris
 * REM
 * Retroninjacyberassassin
 * Return of the Triad
 * Rise of the Wool Ball
 * Scoot Hard DX (WIGZDoom fork)
 * SharpShooter3D
 * Shrine
 * Shrine II
 * Snap the Sentinel
 * Solace Dreams
 * Spooky's House of Jump Scares TC (GZDoom, GZSpooky engine fork)
 * The Inquisitor 3D
 * Total Chaos
 * Vomitoreum
 * Wolfenstein: Blade of Agony
 * Zombies Ate My Neighbors TC

GZDoom-GPL

 * Call of Abdulov

GLOOME

 * Cursed Maze: Gloome Edition
 * Nido Force
 * Nocturne in Yellow
 * Xenomia

Zandronum

 * HaloDoom: Code of Silence
 * Jurassic Rift (Also for Skulltag)
 * Mega Man 8-Bit Deathmatch

EDGE

 * Aliens: Stranded
 * Goldeneye Doom2
 * Robotech: FirstGen

Custom engine

 * Cybershade (derived from Chocolate Doom)
 * Sonic Robo Blast 2
 * SRB2 Kart

Works in progress
These games have been announced, but not released yet.
 * The Age of Hell (GZDoom)
 * Apocalyptic Vibes (GZDoom)
 * ÄRGER: Death Machine (GZDoom)
 * Barely Breathing (GZDoom)
 * Beyond Sunset (GZDoom)
 * Box Party (GZDoom)
 * Brutal Fate (GZDoom)
 * Combat Train (GZDoom)
 * Darkadia (GZDoom)
 * Daytime Drama 2 (GZDoom, WIGZDoom engine fork)
 * Deluge (GZDoom)
 * Disdain (GZDoom, Disdain engine fork with ZDRay support)
 * Enigmatic Worlds (LZDoom)
 * Eternity Blitz (GZDoom)
 * Fury's Sky (GZDoom)
 * Hellslinger (GZDoom)
 * Horryefieing: Rye Adventures (GZDoom)
 * Hypertension: Harmony of Darkness (3DGE, PC/Dreamcast)
 * Hyperion (GZDoom) (by the makers of BlooM)
 * Mala Petaka (GZDoom)
 * Operation ECHO (GZDoom)
 * POSSEST (GZDoom)
 * Project Absentia (GZDoom. WIGZDoom engine fork)
 * Relentless Frontier (GZDoom)
 * Re-Powerslave (GZDoom) (Reimagining of )
 * Rise of the Abyssal (GZDoom)
 * Selaco (GZDoom)
 * Shroud (GZDoom)
 * SLaVE (3DGE, PC/Dreamcast)
 * Supplice (GZDoom)
 * Survive (GZDoom, by Ermin, cancelled)
 * Stellar Valkyrie (GZDoom)
 * Tomb Fetus (Zandronum)
 * Ylfe: Miasmawalker (GZDoom)