- if you project it's made with unity or gobot it's literraly one checkbox to make a ubuntu version - if you use vulkan instead of DIrectX You will have a more robust, smoother and reliable game that is easily compatible with Linux and macOS.
i can tell you how to install a Lubuntu if you are curious, you need just min 10gio (6 for system 4 for data), he can be next to your main OS (dual boot)