Free & Open Source Horror Games
82 free, open-source horror games — real clones and remakes you can download, inspect the source of, and modify.
Active
Clone of Cataclysm
A turn-based survival game in a procedurally generated post-apocalyptic world, actively developed by over 1,000 volunteer contributors.
Active
Clone of Diablo
DevilutionX is a modernized port of Diablo and Hellfire built on the Devilution source reconstruction, adding engine fixes and QoL features.
Halted
Clone of Diablo
Devilution reconstructs Diablo's original 1996 source code from reverse-engineered debug symbols, preserving its original bugs intact.
Halted
Original game image
Original game imageClone of Amnesia: The Dark Descent
The official GPL-licensed engine source for Amnesia: The Dark Descent, which won't compile out of the box without the discontinued FBX SDK.
Active
Clone of S.T.A.L.K.E.R.
A community-improved X-Ray Engine for S.T.A.L.K.E.R. with 64-bit support, bug fixes and Linux/macOS ports.
Platforms:Windows
Stars3,559
Updated1 month ago
LicenseUnknown
Release2014
Genre: FPS
Theme: Alternate Historical
Active
Clone of Elvira II: The Jaws of Cerberus
An open-source engine reimplementation that lets classic point-and-click adventures and RPGs run on modern platforms.
Sporadic
Clone of X-COM: UFO Defense
A playable open-source clone of UFO: Enemy Unknown and Terror from the Deep with extensive mod support.
Halted
Halted
Original game image
Original game imageClone of Amnesia: A Machine for Pigs
The official GPLv3-licensed engine source for Amnesia: A Machine for Pigs, needing the no-longer-available 2012 FBX SDK to build.
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Active
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Original game imageClone of Castlevania: Symphony of the Night
This work-in-progress decompilation aims to rebuild Symphony of the Night's source across PS1, PSP, and Saturn versions, byte-for-byte.
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Clone of Dungeon Keeper
KeeperFX is an open-source expansion and remake of Dungeon Keeper for modern Windows, requiring the player's own original game files.
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Original game imageClone of Silent Hill
A human-led, in-progress decompilation of the original PS1 Silent Hill aiming for a byte-identical rebuild, not a port.
ActiveOriginal game image
Original game imageClone of Castlevania: Symphony of the Night
SymphonyRecomp is an open-beta PlayStation recompilation of Castlevania: Symphony of the Night for modern PCs.
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Clone of Silent Hill 2
A large PC enhancement mod for Silent Hill 2 adding 60 FPS, improved audio, widescreen support, and dozens of bug fixes.
ActiveOriginal game image
Original game imageClone of Silent Hill
A native Windows and Linux port of Silent Hill built from its PlayStation decompilation, playable start to finish.
Stars617
Updated1 month ago
LicenseGPL-3.0
Release2026
Genre: Action
Theme: Horror
Active
Clone of X-COM: Apocalypse
An alpha reimplementation of X-COM: Apocalypse with modding, a skirmish mode and modern resolutions; it needs the original files.
Halted
Clone of Penumbra: Overture
Frictional Games' official GPLv3 source code release of Penumbra: Overture, the first Penumbra game.
Platforms:WindowsLinuxOSX
Stars565
Updated9 years ago
LicenseGPL-3.0
Release2010
Genre: Action
Theme: Horror
Sporadic
Clone of Dungeon Keeper
An open-source dungeon-building RTS inspired by Dungeon Keeper, now mostly archived in favour of the OpenDungeonsPlus fork.
Platforms:WindowsLinux
Stars503
Updated1 year ago
LicenseUnknown
Release2014
Genre: Simulation
Theme: Horror
Active
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Original game imageClone of X-COM: UFO Defense
A static recompiler that rebuilds classic DOS/Windows games like X-COM and Warcraft: Orcs & Humans as native modern builds.
ActiveOriginal game image
Original game imageClone of Castlevania: Symphony of the Night
A static recompilation of the Xbox Live Arcade Castlevania: Symphony of the Night for Windows and Linux.
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Clone of Resident Evil 2
An in-progress Resident Evil 2 engine reimplementation in Go and OpenGL that runs on the original game's data files.
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Original game imageClone of Castlevania III: Dracula's Curse
Compilable, editable disassemblies of 26 NES games that rebuild ROMs identical to the originals.
Halted
Sporadic
Active
Clone of Higurashi: When They Cry Hou
07th-Mod's python-patcher is a cross-platform Python installer for 07th-Mod's fan mods for the Higurashi and Umineko visual novels.
Halted
Clone of Silent Hill 3
An OpenGL and C++ engine remake of Silent Hill 3, buildable via CMake or Code::Blocks on Linux.
Halted
Clone of Legacy of Kain: Soul Reaver
A decompilation of the original PlayStation Soul Reaver, ported to modern platforms including Windows, Linux, and consoles.
Platforms:WebWindowsLinux
Stars173
Updated2 years ago
LicenseUnlicense
Release2022
Genre: Action
Theme: Fantasy
Active
Halted
Clone of Alone in the Dark
A from-scratch reimplementation of the Alone in the Dark engine, requiring the original games' data files to run.
Halted
Clone of Abuse
A fork of the Abuse SDL2 port adding OpenGL rendering, high-res images, cheat console, and Xbox 360 controller support for Windows.
Halted
Clone of Postal
The official 1997 source code for Running With Scissors' Robotron-inspired isometric shooter POSTAL, released by the studio itself.
Active
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Original game imageClone of Silent Hill 2
An early-stage byte-matching decompilation of Silent Hill 3 for the PS2, including the Silent Hill 2 engine it builds on.
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Original game imageClone of Fatal Frame
Himuro is a decompilation project targeting Fatal Frame's US, EU, and JP PS2 releases, aiming for a modern port.
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Original game imageClone of Resident Evil
A decompilation of the 1997 PC Resident Evil with Windows and Linux builds; you supply your own game files.
Stars114
Updated1 month ago
LicenseGPL-3.0
Release2026
Genre: Action
Theme: Horror
Active
Clone of Alone in the Dark
A from-scratch C++ engine reimplementation of the Alone in the Dark games with HD remaster options; original game data required.
Stars113
Updated3 months ago
LicenseGPL-2.0
Release2026
Genre: Action
Theme: Horror
Active
ActiveOriginal game image
Original game imageClone of Fatal Frame
An early native PC port of Fatal Frame for PS2 that runs without emulation, using data files from your own game disc.
Platforms:WindowsLinuxAndroid
Stars85
Updated2 months ago
LicenseAGPL-3.0
Release2025
Genre: Action
Theme: Horror
Active
Clone of Legacy of Kain: Soul Reaver
A decompilation of Legacy of Kain: Soul Reaver for PSX, built from a prototype executable with debugging symbols.
Stars81
Updated1 month ago
LicenseMIT
Release2023
Genre: Action
Theme: Fantasy