ObHack

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ObHack is my name for some modifications Fritz and myself have made to Oblige, a random map generator for the original Doom, Doom 2, and Heretic. It is name thusly because it is a hacked Oblige, and as a tribute to the ObHacks posted to the once-great Usenet newsgroup alt.hackers.

ObHack is a fork of version 2 of Oblige (Oblige 0.81-0.97). It has the following features that Oblige2 does not have:

Real secret areas that take work to find
Improved random number generator which allows arbitrary English or Spanish text to be the seed, resulting in a nearly infinite number of possible seeds
New modes: Single Player + Deathmatch, Deathmatch without exits, and Capture the Flag
Progressive level size: Levels get bigger as one gets to higher levels in the wad
Enclosures and variable room sizes
Adjustable light level
Tiny and gigantic level sizes
Option to have swarms or even more monsters
Monster traps are back (removed in Oblige 0.94)
Boss levels now have boss monsters in them
Choice of player starting weapon
More texture packs, including contributions from Mr. Chris
Deathmatch starts in single player maps
Support for Blasphemer 0.1
And other features not listed here

Git repo

ObHack is currently in deep freeze; development is focused on adding tests to the code base and making it more deterministic. There is a Git repository for ObHack at GitHub, GitLab, Bitbucket, and Sourcehut.

Download

Most people will want to download the final version of the ObHack-8 fork of ObHack:

Windows version (With source code, as required by the GPL)
Full source code for non-Windows platforms (MacOS, etc.)

“Hockey Rink” Version

The most recent updates are done to an older version of ObHack, based on the 2009 code base. I use this older version because it’s more compact than more recent versions; this is a size optimized release for fitting on a “hockey rink” business card sized CD.

This release also includes my fork of an older version of FreeDoom.

Support

Since I am not getting paid for this work, and since professional support contracts cost tens of thousands of dollars a year, the amount of support I provide for ObHack is very limited. I do pay attention to ObHack bug reports filed in GitHub, but I am under no obligation to answer or even address your concern.

Please do not send me a private message asking for support; if you do, I will refer you to GitHub.

Older releases

Older releases of ObHack (and SLUMP) can be seen here.

Other files

Here is a local mirror of all Oblige releases.

There is also version 1.8.6 of the Doomsday/Dengine engine for playing Doom. Please note that this version of Doomsday does not work with newer (post-0.7) releases of FreeDoom. Be aware that I do not provide any support for Deng 1.8.6 besides having a download; people who want a supported version of Doomsday should go the the Doomsday website and download the latest version there.