I really enjoy the Beyond the Sword expansion. My only complaint about it is the AI tends to not be incredibly smart on certain issues; for example, if there's a choke point between my civ and a civ that's warring with me, and my city is sitting square on that choke point - they'll send armies of 4-5 units every ten or so turns, instead of building some galleys (or galleons if it's that far along) and circumventing. They also don't seem to like to build more than 4-5 catapults/trebuchets per army, and for a well-entrenched city you need more than that.
I can beat it pretty constantly on Noble, but as soon as I dial up to prince the computer player cheating gets out of hand. Maybe I'm just not good enough at finding efficient research paths.
I had the "just one more turn" last night / this morning until 4am. I've been playing on Prince and yes it's really difficult being behind in technology all the time. My early game land grab and war rush nets me a very large territory but from there it's attrition. I hold my own mid game fending off opponents with a large military force and tactics, but by the year "1900" the AI already has modern armor and I just discovered tanks. I'm so far behind that I lose because some other civ made it Alpha Centauri. I didn't have enough nukes to wipe that civ off the planet. My last game I had a surprising loss due to a cultural victory. Now I know to fly the nukes when I see "$City has achieved legendary status."
This Facebook is app is very very dangerous. And the iPhone app that I just heard about here is even more so.
I can beat it pretty constantly on Noble, but as soon as I dial up to prince the computer player cheating gets out of hand. Maybe I'm just not good enough at finding efficient research paths.