Last month I wrote about a developer having ported Doom 3 BFG to Linux. With the original Doom 3 (id Tech 4) engine being well-supported under Linux since its inception and still being maintained well, the Doom 3 BFG open-source code was merged with the original Linux support code plus other necessary changes made.
Robert Beckebans, the developer working on the Linux port of Doom 3 BFG, has now told me that his port is fully playable on Linux. The only exception is the "Doom Classic" part not working. Since last month, Beckebans added a new OpenAL back-end to the BFG engine for sound support under Linux.
The code for Robert Beckebans' Doom 3 BFG Linux work can be found on GitHub and it's been seeing new development activity on pretty much a daily basis.