Port the game to common linux distributions starting with ubuntu.
Perhaps follow up with fedora and then manjaro and at that point 99% of all existing distributions are supported.
Raspbian, Chrome OS, ect don't count because they go into the phone port Feature, since they are from an OS code perspective indistinguishable from android. (and apparently this feature is already happening)
EDIT: oh I just found this one, my bad : https://www.simplerockets.com/Feedback/View/fz01wT/Linux-Support
I found it via steam forum. this forum really needs a search function
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