I’m pretty sure Unity and Unreal all have a Linux export option - but that doesn’t come with a 100% guarantee that everything the dev linked in, from plugins to outside libraries, launchers, and hundreds of other things, all work perfectly. I’ve played several indie games that decided to helpfully include a Linux build, but I had a better time running their Windows build through Proton.
I’m pretty sure Unity and Unreal all have a Linux export option - but that doesn’t come with a 100% guarantee that everything the dev linked in, from plugins to outside libraries, launchers, and hundreds of other things, all work perfectly. I’ve played several indie games that decided to helpfully include a Linux build, but I had a better time running their Windows build through Proton.