Great deal for those that appreciate Doom 3. As for the complaints, you buy here for the data files (base & d3xp folders) then run the games with far newer and updated source port game engines. The games will run significantly better on modern systems, without any change to the gameplay.

Source Ports
Doom 3 - dhewm3

Doom 3 BFG - RBDOOM-3-BFG

Can even run on a Mac (Apple Silicon & x64) thx to Mac Source ports (https://macsourceports.com/) with the game engines notarised by Apple.

Like these two as can play both on Mac & PC.

Q-6

BFA can play on Windows & Linux. Sorry but I don't have a Mac to test it on it, any volunteers are welcome of course