Civ 3 was the last original "civ" game, the rest have additional extra feutarus and stupid things in it. On my surface pro I am playing CIV 6 and it extreme slow , eventually you got so much micromanagement, what should be not there. For the whole history best 4X game for me master of magic and master of orion 2. Those two had a lot of revival project, but at all all failed, and there were no port out, or limited functionality withou AI, and saw another one, which used some RP dice roll mechanism at battles, and battles took 100+ turns no comment I am still sit down in front of the dosbox and play the two master of games, not on daily basis but I do