Hello there!
I'm new here but bring some important information for ones who can't launch a game - my problem was with installed from GOG game, it just crashes in the first seconds of launching.
Later I found that it crashes only if I have active connection to the internet and after disabling a connection game works perfectly - check thisSo if you want to run game with internet connection (for multiplayer) you need to create environmental variable in Windows -
https://imgur.com/a/kVtZOHM(it highlighted blue on the screenshot)
Still there is need to run a game from EoCApp.exe directly but now it works...
I will be glad if this will help somebody to run a game!