I've been playing FreeCiv for a couple of weeks now and quite enjoy it.
The last two days however, something has changed where the wonders don't appear
as a choice to build in the city menu.
The only way I've been able to get them to appear is save the game, exit the
site, then reload the game.
After doing this, the wonders then appear as a selection in the city menu.
However, after selecting a wonder to build, one turn later a message appears
that it is no longer available to build.
Thank you for your time.
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