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Steam Frame (VR with Linux)
(store.steampowered.com)
A community for everything relating to the GNU/Linux operating system (except the memes!)
Also, check out:
Original icon base courtesy of lewing@isc.tamu.edu and The GIMP
I see, by PC you mean you don't want a traditional 'tower' PC, which is perfectly reasonable. I personally consider anything within the umbrella of "PC gaming" to be a PC, including laptops (even Macbooks).