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Lemmycraft, a leftist minecraft server
(lemmygrad.ml)
Talk about whatever, respecting the rules established by Lemmygrad. Failing to comply with the rules will grant you a few warnings, insisting on breaking them will grant you a beautiful shiny banwall.
A community for comrades to chat and talk about whatever doesn't fit other communities
I also wish Minetest was considered. It is totally configurable with a plethora of mods, all of which are optional, and is totally free. And I just find it much nicer than Minecraft in general.
But I understand that hosting a server is not easy, and personally I don't think I could host a Minetest server at this time.