I’m not sure if this counts as a centralized server in your eyes, but many popular games on Steam offer dedicated servers in both Windows and Linux.
I think all of the Linux ones require steamcmd, but personally I’ve hosted (in no particular order) Terraria, 7DtD, Cryofall, Don’t Starve, Ark, and more. It’s usually pretty simple and decently documented, as well.
I’m not sure if this counts as a centralized server in your eyes, but many popular games on Steam offer dedicated servers in both Windows and Linux.
I think all of the Linux ones require steamcmd, but personally I’ve hosted (in no particular order) Terraria, 7DtD, Cryofall, Don’t Starve, Ark, and more. It’s usually pretty simple and decently documented, as well.