I've just seen the announcement, that Baldur's Gate 3 will come out for Stadia, so it means you'll make the Linux version already (with Stadia specific integration).
Do you also plan to release it for proper desktop Linux (on GOG and Steam)? Since you are already targeting Stadia's Linux, making it for general desktop Linux users shouldn't be too hard.
(Or even just "GNU" now, since there is a GNU project, Linux-Libre.)
Support for GNU would warm the hearts of old system admins. Maybe an appimage ...