I am a long time Civ players (since Civ I), but far from being hardcore player. I usually play it for several weeks at the time and then leave it for months, sometimes more. Last time I played IV BTS was more than a year ago. I enjoyed the Better AI MOD (thank you jdog ) and BUG. I never got into Civ V because I was a bit turned off by all the radical changes and the initial problems and bugs with the game and when it came out I didn't think it was worth the full price in that state. This past weekend, thanks to the 75% off on Steam, I decided to bite the bullet so I got the GOTY + the 2 additional DLCs to go with it. I haven't had the time to start a real game yet, but I noticed that there is a Unofficial Patch and Vanilla Enhanced mod that seem well done. My question is, should I start with the unmodded game first or should I use the UP from the get go?