ZDoom is a family of enhanced ports of the Doom engine for running on modern operating systems.
It runs on Windows, Linux, and OS X, and adds new features not found in the games as originally
published by id Software.
The packages for RHEL 8 and RHEL 7 are in each distribution’s respective Extra Packages for Enterprise Linux (EPEL) repository. The instructions for adding this repository diverge slightly between RHEL 8 and RHEL 7, which is why they’re listed separately below.
The EPEL repository can be added to RHEL 8 with the following command: