Classic RBDOOM 3 BFG


Classic RBDOOM 3 BFG
Codebase Doom 3: BFG Edition
Developer(s) George Kalampokis
Initial release 1.1.0 (2017-04-04, 2 years ago)
Latest release 1.2.1 (2019-11-09, 37 days ago)
Development status Active
Written in C++
Target Platform Cross-platform (Only Windows and Linux version is tested)
Available in English (United States)
License GNU General Public License v3+
Website Classic RBDOOM 3 BFG site
Source Repository



Classic RBDOOM 3 BFG is a source port of Doom 3: BFG Edition that uses RBDOOM-3-BFG source code. This source port mainly focuses on Doom Classic and provides various bug fixes and restored content that has been cut from the original game.


  • Improved sprites and flats loaded from PWADs.
  • DEHACKED support.
  • Added Final Doom and Master Levels as expansions for Doom II.
  • Fixed Master Levels map Nessus inaccessible secret.
  • Added two different endings for Master Levels.
  • Full controller support (plug n' play anytime).
  • Change Doom Classic aspect ratio from the original to full screen (stretch).
  • Change Controller layout from Xbox 360 to PlayStation 3.
  • Removed and increased various static limits.
  • Aspect ratio correction for Classic Doom games.
  • Option to use forced aspect ratio (4:3) on Doom 3.
  • Improved lighting for Classic Doom games.
  • EAX support in Doom 1,2 & 3 (through OpenAL Soft EFX).
  • Restored support for the game.dll.
  • Free look for Doom I & II.
  • Chasecam for Doom I & II
  • Jumping for Doom I & II
  • Crosshair for Doom I & II

Unlocked content[edit]

Various features of Doom Classic have been cut from Doom 3: BFG Edition. Classic RBDOOM 3 BFG restores various parts of this content, such as:

Ultimate Doom and Doom II[edit]

  • In the PC version multiplayer is enabled.
  • All cheat codes have been enabled.
  • You can input the original command line parameters.
  • There is confirmation when selecting Nightmare! skill.
  • On Nightmare!, the fast monsters mechanic has been restored entirely.
  • The INTERPIC lump will be used instead of the TITLEPIC, only if the TITLEPIC is missing.

Ultimate Doom[edit]

  • All animation has been restored to the intermission screens.

Doom II[edit]

New parameters[edit]

Classic RBDOOM 3 BFG also adds new parameters for both Doom Classic games and for Doom 3; these parameters are:

Ultimate Doom and Doom II[edit]

  • doom, doom2, both: Allow you to force the original command line parameters to be accepted only by either Ultimate Doom, Doom II or both games.
  • classich: Enables Doom Classic cheat codes
  • zmem: Set the size of zone memory in megabytes (Default is 30MB)

Doom II[edit]

  • exp: Starts new game with the desired expansion. Possible values: (This parameter can be combined with the warp parameter)
    1. Doom II
    2. No Rest for the Living
    3. TNT: Evilution
    4. The Plutonia Experiment
    5. Master Levels
  • ex: Used inside the file parameter allowing you to load different mods per expansion. Example: -file ex 1 <path-to-mod>(NOTE: the numbers are similar as the exp parameter with the difference that number 2 is in the end)

Doom 3: BFG Edition[edit]

  • com_game_mode: Launch straight forward the desired game. (After the splash screen)
  • in_joylayout: Change controller layout between Xbox 360 and PlayStation 3.
  • flashlight_old: Change from the "armor-mounted" flashlight to the original flashlight. (Requires New Game)
  • r_aspectcorrect: Enable or Disable Classic Doom's aspect ratio correction.
  • cl_messages: Set the number of message lines on Classic Doom. (1-4 lines)
  • cl_pitch: Adjust the pitch of Classic Doom sound effects

External links[edit]

Source code genealogy
Based on
Classic RBDOOM 3 BFG Active