[LargoLasskhyfv]

While considered 'experimental' this is state of the art in FreeCiv:

https://freeciv.fandom.com/wiki/Multiplayer_II_Dragoon_Summa...

And this giving an overview of the development up to that point:

https://freeciv.fandom.com/wiki/Multiplayer_II_Navigation_Pa...

It's not stuck in 1990. Actually rather fun to play against humans, AI still meh.

[LargoLasskhyfv]

I just looked at https://www.freecivweb.org/ and one can choose this rule set at the beginning, among some other options. Wasn't the case when I last looked. Play in browser, no setup necessary. WARNING! Timesink!