Sid Meier's Civilization V isn't currently available for a permanent free download from official digital stores. However, you can still experience the game or similar alternatives through legal means: Official Trials and Demos
While not free, the game frequently goes on sale for a fraction of its original price: Sid Meier's Civilization V isn't currently available for
: You can download a free Civilization V PC Demo on Steam to test the gameplay before purchasing. Sid Meier's Civilization V isn't currently available for
If you're looking for the "Civ experience" without the price tag, these open-source projects are completely free: Sid Meier's Civilization V isn't currently available for
: Sites like Softonic offer trial versions for Windows users. Free Alternatives
: You can often find highly discounted Steam keys on G2A or MMOGA . Sid Meier's Civilization® V on Steam