Actually, yes, with the game started and a scenario loaded, I get a 0% usage for the dGPU from the System Monitor sensor if started from terminal, but not from the Application Launcher after adding the flag suggested above. which 0ad usr/bin/0ad which pyrogenesis usr/bin/pyrogenesis However, when run from terminal, both start the game, but as above - with 0% dGPU usage. If either of these is the "correct" exe to use, what to do, then, so the dGPU is used?

In French but nice and interesting video

Might be using the igpu then which would mean not nvidia  but should be enough to go to the ingame options an select the vulkan backend. Run "which 0ad" in terminal to get the path

What vision is that? the game remains the same. Do these people know where they're going?

It will be difficult to implement new mechanics.   There are people here who literally lose a third mind every time something is discussed.