The updated version of DOOM + DOOM II that bundles them together with enhancements from id Software / Nightdive Studios, Bethesda just got Update #2 with more improvements for playing with mods.

Read the full article here: https://www.gamingonlinux.com/2025/01/doom-doom-ii-adds-multiplayer-mod-support-but-its-broken-on-steam-deck-linux/