DISCLAIMER: Look, we know you know this, but always use your anti-virus/malware/whatever checker on anything you download. While the applications/mods listed below may have been used by others before with no adverse effects, it doesn't hurt to check it out anyway.
Back to TopObviously, you need a GENUINE PC copy of Doom on your PC before you do anything. We don’t condone piracy here at VideoGamer. You can get Ultimate Doom on Steam for around £7 (probably less in Steam Sales). You’ll also need WinRAR to extract the Brutal Doom download files.
You’ll also need an application called Zandronum. Zandronum is a tool that enables you to run mods like Brutal Doom (and play online). Download the installer rather than the archive in order to follow the steps below.
Finally, you’ll need to have downloaded the Brutal Doom version 20 source file (available starting June 6 - check back if it's not yet on the download page below). You can download it from here. Once you’ve downloaded Brutal Doom, from the WinRAR file viewer, extract to desktop to make it easier to find.
Back to TopNow that you have Zandronum and Brutal Doom version 20 installed on your computer, you need to open the Zandronum install folder. Click and drag the brutal20.pk3 into that folder. Then, from there, click and drag the brutal20.pk3 file onto the Zandronum.exe application file itself. From there, Zandronum should launch Brutal Doom.