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Factorio has peaked at over 90k concurrent players for 2 days in a row now
(lemmy.dbzer0.com)
3x the previous all time high just shy of 35k in August 2020 when 1.0 released - on a Friday during the pandemic.
Elevated rail is the reason. I know you still can't build fabricators over it, but at least your rail system can run straight. Research that Refined Concrete quick.