Back in 2008 Civilization games were complicated because gamers wanted the franchise to go deeper. The balance in turn based strategy games where you advance through the Ages is making the game deep enough for long time fans but accessible enough for new fans to get into it. When Civilization Revolution launched on XBox 360 and PS3 it was a stripped down and simplified game for a console audience. Some have argued the game is too easy or takes away too many things from the main series (which it does) but I'd say that Civilization Revolution is a more streamlined game that gets you in and out and makes the game easy to understand if you haven't kept up with each entry...

I watched some friends play this which lead to me getting into Civ 6 on PC, which I very much enjoyed. I got most achievements all while playing against myself, what fun that was! :)
I've got Civ VI on Steam and Switch and I've honestly not really played much of it. I need to put that on my list of games to dig into!