6 was free on epic games a few years back and it was recently on sale on steam for just a few dollars.
I picked it up on steam for the Linux version and it was pretty addicting. I never get games dlc and I don’t think I’m good enough at the base game to take advantage of the different things the dlc adds.
Yeah, it took me long enough to get used to the changes in 5, I like the game and am somewhat inclined to stick with it.
If you want something Civ 5-like on mobile, check out Unciv. Its an open source and using Civ 5 as a template. https://yairm210.itch.io/unciv