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idTech4A++

DOOM III/Quake 4/Prey(2006)/DOOM3 BFG/Other idTech/open-source game runtime envi
New in version 1.1.0harmattan69lindaiyu
* Fix BSE effects on Quake 4.
* Optimize PBR shaders with original specular texture on DOOM 3/Quake 4/Prey(2006).
* Add settings by ImGui on DOOM 3/Quake 4/Prey(2006), command is `idTech4AmmSettings`, default binding to F10.
* Add mp3 sound file support on DOOM 3/Quake 4/Prey(2006).
* Fix GUI, credits after end of game, map static mesh vertex color on Quake 4.
* Fix low frequency on HeXen-Edge of Chaos(DOOM 3 mod).
* Add `Urban Terror`(ver 4.3.4) support, game standalone directory named `urt`, g
idTech4A++ is idTech game runtime environment for Android.
Support DOOM III/Quake 4/Prey(2006)/DOOM3 BFG/Quake 1/Quake 2/Quake 3/Return to Castle Wolfenstein/The Dark Mod/GZDOOM/Wolfenstein: Enemy Territory/RealRTCW/FTEQW/STAR WARS™ Jedi Knight/Serious Sam Classic

1. Putting your PC game data(external folder) to launcher setting `Game working directory`(default `/sdcard/diii4a`).
2. Click left icon or right game name text of launcher status bar for choosing game, and select game mod in tab `GENERAL`'s `Game`.
3. Finally `START GAME`.

Feature:
multi-threading renderer
pure soft shadow with shadow-mapping
wide-character language translation support
global illumination rendering
translucent/soft stencil shadow
Phong/Blinn-phong/PBR/no-lighting rendering
OpenGLES2.0/OpenGLES3.0
OpenAL(soft) and EFX Reverb

Standalone game directory:
Because more support games, it cause all game mods data directory put on a shared folder, them maybe have same name, and diffcult to view/manage. So application default enable `Standalone game directory` since version 1.1.0harmattan57, and you can also disable it on launcher settings.

If enable `Standalone game directory`, game data directory should put on `Standalone game directory` itself(e.g.).

Games of `Standalone game directory` and folder name:
DOOM III: doom3/
Quake 4: quake4/
Prey(2006): prey/
Quake I: quake1/
Quake II: quake2/
Quake III: quake3/
Return to Castle Wolfenstein: rtcw/
DOOM 3 BFG: doom3bfg/
Wolfenstein - Enemy Territory: etw/
RealRTCW: realrtcw/
STAR WARS™ Jedi Knight - Jedi Academy™: openja/
STAR WARS™ Jedi Knight II - Jedi Outcast™: openjo/

Games of always force `Standalone game directory`:
The Dark Mod: darkmod/
GZDOOM: gzdoom/
FTEQW: fteqw/
Serious Sam Classic - The First Encounter: serioussamtfe/
Serious Sam Classic - The Second Encounter: serioussamtse/

Folder name of games/mods:
DOOM III: base/
DOOM3 - Resurrection of Evil: d3xp/
DOOM3 - The lost mission: d3le/
Classic DOOM3: cdoom/
Rivensin: rivensin/
Hardcorps: hardcorps/
Stupid Angry Bot(a7x): sabot/
Overthinked DooM^3: overthinked/
Fragging Free: fraggingfree/
HeXen - Edge of Chaos: hexeneoc/
LibreCoop: librecoop/
LibreCoop - D3XP: librecoopxp/
Perfected Doom 3: perfected/
Perfected Doom 3 - RoE: perfected_roe/
Doom 3 - Phobos: tfphobos/

Quake IV: q4base/
Hardqore: hardqore/

Prey(2006): preybase/

Quake I: darkplaces/id1/

Quake II: baseq2/

Quake III Arena: baseq3/
Quake III Team Arena: missionpack/

Return to Castle Wolfenstein: main/

The Dark Mod: darkmod/

DOOM 3 BFG: base/

GZDOOM: gzdoom/

Wolfenstein - Enemy Territory: etmain/

RealRTCW: Main/

FTEQW-Quake I: id1/
FTEQW-Quake II: baseq2/
FTEQW-Quake III: baseq3/
FTEQW-HeXen II: data1/
FTEQW-FreeHL: valve/
FTEQW-FreeCS: cstrike/

STAR WARS™ Jedi Knight - Jedi Academy™: base/
STAR WARS™ Jedi Knight II - Jedi Outcast™: base/

Serious Sam Classic - The First Encounter: serioussamtfe/

Serious Sam Classic - The Second Encounter: serioussamtse/

Anti-Features

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Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.1.0harmattan69lindaiyu (11069) suggested Added on Oct 04, 2025

    arm64-v8a armeabi-v7a

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • android.permission.ACCESS_SUPERUSER
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • android.permission.MANAGE_EXTERNAL_STORAGE
    • query all packages
      Allows an app to see all installed packages.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
      (10)
    • android.permission.READ_LOGS
    • record audio
      This app can record audio using the microphone while the app is in use.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • install shortcuts
      Allows an application to add Homescreen shortcuts without user intervention.
    • uninstall shortcuts
      Allows the application to remove Homescreen shortcuts without user intervention.

    Download APK 494 MiB PGP Signature | Build Log

  • Version 1.1.0harmattan68luyiping (11068) - Added on Aug 25, 2025

    arm64-v8a armeabi-v7a

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • android.permission.ACCESS_SUPERUSER
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • android.permission.MANAGE_EXTERNAL_STORAGE
    • query all packages
      Allows an app to see all installed packages.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
      (10)
    • android.permission.READ_LOGS
    • record audio
      This app can record audio using the microphone while the app is in use.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • install shortcuts
      Allows an application to add Homescreen shortcuts without user intervention.
    • uninstall shortcuts
      Allows the application to remove Homescreen shortcuts without user intervention.

    Download APK 486 MiB PGP Signature | Build Log

  • Version 1.1.0harmattan67luyiping (11067) - Added on Jul 11, 2025

    arm64-v8a armeabi-v7a

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • android.permission.ACCESS_SUPERUSER
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • android.permission.MANAGE_EXTERNAL_STORAGE
    • query all packages
      Allows an app to see all installed packages.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
      (10)
    • android.permission.READ_LOGS
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • install shortcuts
      Allows an application to add Homescreen shortcuts without user intervention.
    • uninstall shortcuts
      Allows the application to remove Homescreen shortcuts without user intervention.

    Download APK 446 MiB PGP Signature | Build Log

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