Have you heard of Red Alert on an open source engine available free for Linux, basing on freeware assets? The link is HERE and there is more good news, as there are actually three games available running on the same engine: the Red Alert, the Tiberian Sun and the Dune 2000. The bad news is, the game is unavailable in the Ubuntu repository, but it is available as a Flatpak, so you will have to follow the instructions on how to properly get a Flatpak installed, if unfamiliar already.
HERE are general instructions on Flatpaks for Ubuntu, while below is a command to be executed once the linked set is completed - mark that you will need to reboot as well:
HERE are general instructions on Flatpaks for Ubuntu, while below is a command to be executed once the linked set is completed - mark that you will need to reboot as well:
Code:
flatpak install --from https://flathub.org/repo/appstream/net.openra.OpenRA.flatpakref