Civilization V is a 4X game where players lead their civilization to achieve a number of victory conditions.
Pro Endless scenarios and replayability
Civilization V has a large assortment of nation leaders to choose from that have an even bigger assortment of scenarios that are able to play out for said leaders. Each game can be quite unique in this way as each leader allows for a different nation to be controlled.
Pro Customization through policies
Policies are used as a tool to gain a variety of customizations that benefit ones society. There is a branching tree of policies that will allow the user to pick certain aspects that will suit them best such as adding law or religion to ones society which will give gains in certain aspects.
Con No stats on other Civ attitudes
Unlike past Civilization games there are no longer stats on the attitudes of the players surrounding Civilizations. This allowed one to see how each other nation felt about the player, but now that it is gone one has to guess, which is definitely not as helpful.
Con No steam workshop support on Linux
The Linux port currently does not support steam workshop, and as the mac port made by the same developers has not received workshop support despite having been out for several years, it is unlikely that it ever will.
Though there are unofficial workarounds to get the mods working.