Whatever Civ5 may be, it's not CivRev2. Civ5 has a great deal more in common with Civ4. The principle departures for CivRev is that there are no workers or tile improvements and you can go all the way to Space Flight in about two hours (average player). It's a far more condensed game. Also the multiplayer is great. Single? Well, I probably would have shelved the game two years ago if not for multi.