I guess Elixir is a good choice. Just can advise a couple of good video courses in addition to books. 1. https://pragmaticstudio.com/unpacked-multi-player-bingo-with.... 2. https://codestool.coding-gnome.com/courses/elixir-for-progra.... In [2] Dave Thomas, author of a Programming Elixir book, goes through creation of online game too.