ChadQuake is a fork of Mark V Quake with the following changes:

Screenshots

Software rendering only

WinQuake, baby! Because that's how Quake was meant to be played! No texture filtering, no texture perspective correction, awesome fluid effects, better lighting, and more. For a complete comparison between Software Quake and GLQuake, see this article.
Code for other versions is still there, but it's untested and the build config has been removed.

No animation interpolation

Choppy animations and movements are part of Quake, and they look better than interpolated ones that look like what a 12 year old would make in an evening playing around with Unity.

Quake defaults, while keeping support for mods

All the customization is hidden so that it can only be accessed by mods or the console. This keeps the original look and feel of the game, as well as support for all the mods that work with Mark V.

MP3 only

It's 2022, Chad doesn't have a CD drive, why even support it? Music is only read from MP3 files instead.

Windows and Linux support

The new version of ChadQuake (re)introduced Linux support because GNU/Linux is the new OS of choice for any self-respecting Chad.

No level selection menu

Chad plays through the whole game on nightmare, he doesn't cheat with the level selector.

The original menu

Mouse support for menus in a 1996 game? Heresy!

Max resolution is 1280x1024

Do you think a 1996 game was meant to be played in 4K? Or even 1080p? Heresy! You play in 640x480 and thank your daddy for buying you that sweet Pentium Pro, otherwise you'd be stuck at 320x200 like everyone else. For mods support however, it's better to have a limit of 1280x1024.

The new version of ChadQuake improved the original integer scaling option and can now run at your native screen resolution (yes, even 4K), while still rendering internally at a lower resolution and then scaling it using integer scaling. For instance, let's say you have a 2560x1440 display, and you set the scaling to 640x480, ChadQuake will render at 853x480 and then do 3x integer upscaling to bring it up to 2560x1440, keeping that nice pixelated crispy and crunchy look that we crave for.

For an even more 1996 experience, open the console and try r_limitspeed 1, it simulates the performance of an old PC, with performance going up and down depending on scene complexity!

Widescreen support

Yes, the original Quake ACTUALLY DID support wide displays, as well as tall ones, square ones, any aspect ratio was supported. So does the new version of ChadQuake.

Needless to say, Chad plays EXCLUSIVELY on a 4:3 CRT.

Various improvements and bug fixes over Mark V 1036

• Support for GCC version 10 on Linux
• Fullscreen now works on Linux
• Implemented MP3 music support on Linux
• Introduced an r_limitspeed cvar to reduce the framerate based on estimated scene complexity, for those who REALLY want the 1996 experience
• Improved integer scaling behavior (can render at up to 1280x1024 while keeping native resolution)
• Fixed a bug that would break the game when reloading a save while dead

Download for Windows

For Windows XP and newer

Download for GNU/Linux

For all modern distros

It works the same as Mark V:

• Copy the id1 folder from the original game, there should only be two files in it: pak0.pak and pak1.pak, delete anything else
• Put your music files in id1/music named track##.mp3
• Run the game

Note: on GNU/Linux, you'll need the sdl2 and sdl2_mixer libraries, download them using your package manager.

Browse GitHub repository
Download from here

Baker: for making Mark V, the best and most badass Quake source port out there.

GNU GPL Version 3 or newer