We've seen plenty of gamepacks and mods for various things running on GZDoom and some are pretty awesome but the upcoming Selaco looks like it's going to be one of the absolute best.
Read the full article here: https://www.gamingonlinux.com/2021/08/its-hard-to-believe-selaco-is-running-on-gzdoom-in-the-latest-3-minute-trailer