The wonderful people at Humble Bundle are offering Sid Meier’s Civilization III for free! What’s more is that this is the Complete Edition so you get the expansions as well. Act fast since it is only available for a limited time.
Civilization III is the game in the franchise I have probably played the most. My dad was really into the Civilization games but never upgraded from this one until a couple years ago when he got the fifth one. It’s a great game and while Civilization V and Civilization VI are very different, Civilization III is a great way to get a small taste of what this series of great games has to offer at no cost.