I thought the thread was going to talk about playing civ 5 in general over time, not just playing a particular game itself in civ 5. E.g: do you get get bored of civ 5 after 1000 hours or when you can beat deity and MP with relative ease (on deity as well)? Anyway, for me, I think it's between Claissical and renaissance, assuming that I've had peace in that timeframe. Industrial era is when you get artillery and that's where warmongering gets interesting and when you get ideologies with factories. However, the main variables are what's in the game and what VC you are after, especially domination victory, not really the time/era. If you are next to peaceful players and you are peaceful, the game would seem rather boring. However, if you are a warmonger in this situation, the game will be very interesting as you have to fight off every other civ. On the other hand, if you are next to some warmongering civs and you wish to remain peaceful, then the game will be either irritating or interesting for you. So it all depends on your plan/character and your environment. That determines whether your game will be boring or not. If it is an issue, try aiming for domination victories. Right now, I am divided between aiming for peaceful victory on immortal and aiming domination victory on emperor, if not, on king. I also second Palejackal's statement.