Sid Meier's Civilization III is free to download and keep from the HumbleStore during the next 48 hours or so. If you are looking for a way to sacrifice an entire weekend on the altar of One More Turn, head over to Humble for your Steam key.
The Civilization series has expanded and evolved considerably over the decades. When trying to distil the series' core systems different tastes will usually point you to a different Civilization game claiming that it represents the core Civ experience. Civilization III is the entry to the franchise that added just enough complexity compared to its predecessor for it to be distinct, while offering a more visually appealing and streamlined game altogether.
Combat can sometimes be a less than graceful contest of attrition, and some of the systems expanded upon in later entries like religion and trade are in a more rudimentary state, but the 4X essentials necessary for an all night one more turn session are all in place.
If you have ever wondered if turn-based strategy is a genre worth your attention, but couldn't be bothered to embark on the quest of finding out, a free copy of Civilization III is all the incentive you should need to finally answer that question.
Civilization III comes from a time before the modern plague of DLC, and the version provided by Humble is the complete edition containing the Play the World and Conquests expansions. The classic is available with HumbleBundle to for free over the coming weekend. All you need is an account with HumbleBundle and a Steam account ready to receive the you will get from the HumbleStore.