After watching the new Dune movies (2021 and 2024 ones) I checked out the vidya scene what they have.
I found some dudes are developing an open source cross platform engine for the old Dune 2, the Dune Legacy. The player needs the original game files to play. It's liek OpenMW basically.
Here's a link to the project: https://dunelegacy.sourceforge.net/website/
Have not tried it yet.
Two more finds are:
Dune Spice Whores Wars (released in 2023 Sept.), and
Dune Imperium (2024 March, very recent), which is board game adaptation, uses cards and tokens as far as I can tell from screenshots, have not tried.

Dune Spice Wars is an RTS, and has the classic elements that reminds me of Dune 2. It has that map where you select the next mission, and then you mine spice, build buildings, and produce units and you send your units to fight the rival factions who do the same.
The game goes beyond this however. The battle map consist of smaller segments, villages, you occupy with the resource in that specific region. The buildings are built around the villages.
There is an abundance of various points and resources to generate and track, which is used to do whatever needs doing, from building, recruiting, voting in the Landsraad, doing spy missions and whatever. Spice, money, plascrete manpower, batteries, water, authority, influence, knowledge, intel, hegemony, landsraad standing, guild favor, scraps. What the fuck. Percentage hell. You research stuff to earn bonuses, unlock buildings, units, whatever. You buy CHOAM shares. Generate agents to do intelligence missions and counterintel. Trade with sietches, to make them friendly and ally and send agent to them to get some other bonus. Recon with ornitopters (they can set to auto) to discover villages and resources, and researchable sites with also provide resources and whatnot. Uhh, stuff. Can do without battles fine.
Did three missions from the campaign with the House Atredies. I failed the first for I got assassinated. Won the next two with hegemony. Different missions have different goals, only in skirmishes can win however you want.
It's really an okay game. It already is repetitive despite all the details, but as far as RTS games go, it doesn't lack in anything. I think it is still unpolished, and perhaps imbalanced.