C-evo for Windows has been around for a while.
http://www.c-evo.org/
Its subsequently been ported to Linux.
http://www.c-evo.org/bb/viewtopic.php?f=4&t=174
I have worked on the Debian packaging, fixed a few bugs, tweaked the graphics for the large tile size, and added some documentation and extra maps. Packages for Buster & Bullseye can be downloaded from the OBS here.
https://build.opensuse.org/package/show ... rBBB/c-evo
The game has a good on-line manual, with a separate menu link. The package includes a tutorial game and a 'HowTo' guide. These might be helpful for first time players.
Some useful info here too.
https://civilization.fandom.com/wiki/Starting_a_new_game_(C-evo)
https://civilization.fandom.com/wiki/C-evo:_Strategies_for_first_few_turns
https://civilization.fandom.com/wiki/Strategies_(C-evo)
https://civilization.fandom.com/wiki/Category:Guides_(C-evo)
Enjoy,
PB