Hi,
Did find a launcher -> [https://github.com/Ourouk/nostalgia-launcher]
OctoWow Json specific -> [https://paste.ononoki.org/?bf10074dbf4e15d3#768wCTfthQVcirGr3jmJYkuG2BMVEUtAHXr8oe2jj81j]
I did extract the links from the official launcher to this one and it work on linux !
With the package umu ...