I am playing Civ V for a month or so (do it 2 or 3 times every year), after doing a couple of mods with the DLL release and the new expansion I got renewed interest, but as always I end up finishing 1 out of 5 or more games only. Boring mid/late game, most of the times when you know you will win for sure, or loose, or that it will take a long time for that to occur. Did a mod to extend the medieval period so that most of the game played during it, the tech race was not so important and the combat with those units seems more natural.
Also a big fan of Battle Academy from Slitherine, low level wargame with nice graphics and interface, very good mod support and excelent developer relation with the community.
I still cannot forgive Firaxis for their null mod support in XCom, still play it also from time to time.