Unciv is a free, open-source take on Civilization 5 that’s coming to Steam When is Civilization not Civilization? When it’s Unciv, a free to play, open-source reimagining of Sid Meier’s Civilization V that’s being developed by volunteers on GitHub. After nearly three years in development and releases on Android, Linux, and through itch.io, Unciv’s now moving its units onto Steam. …