While the games are generally paid products, there are several periodic and permanent ways to play for free:
: Historically, Epic Games has offered the Sid Meier's Civilization VI Platinum Edition for free during limited-time promotions. Official Demos & Trials : While the games are generally paid products, there
: Freeciv is a completely free, open-source turn-based strategy game inspired by the series, available on platforms like the Microsoft Store . While the games are generally paid products, there
: Older titles like the original 1991 Sid Meier's Civilization are hosted as "abandonware" for educational or preservation purposes on sites like the Internet Archive . Bulgaria in Sid Meier's Civilization While the games are generally paid products, there
If your interest is specifically in Bulgarian content within the game: Bulgaria Civilization | Civilization VII