On: Super Tux Kart – Linux racing game

[Shared404]

> to make the death-metal of open-source games.

The original DOOM is open source, I think.

Update: Found it! It's here, but it's the engine only:

https://github.com/id-Software/DOOM

[chungy → Shared404]

Unfortunately they only pushed the non-open source licensed one. It was relicensed as GPLv2 a couple years later.

https://github.com/Doom-Utils/historic-ports/tree/linuxdoom