what multiplayer game servers use elixir? can you give specific examples?

These were just examples from head, where I'd see it being used, but concrete examples are here: https://elixir-companies.com/

You can browse by industry, gaming here: https://elixir-companies.com/industries/gaming

Additionally, I believe Riot Games uses Erlang for their in-game chat and maybe other services. Also DemonWare (part of Activision Blizzard) used Erlang for CoD Black Ops, presentation here: http://www.erlang-factory.com/upload/presentations/395/Erlan...

Anywhere where Erlang is used, Elixir can be used too :)