I know I'm not alone in saying that Civ4 is an amazing game and is by far my favorite game of all time! I never got tired of playing it because all of the complexity and depth made it nearly infinitely replayable. If Civ4 had been the last iteration ever released, I would have probably kept playing it for the next 50 years, never to get bored with it.
Just my opinion here, but that's really why I was hoping that Civ5 would have been an "upgrade" to Civ4....Civ4.5 in effect. Civ4 with hex tiles would be awesome! Civ4 with Directx11 graphics would be awesome! Civ4 with modern CPU support (multi-core) would be awesome! I would have paid $50 for those upgrades to Civ4 alone.
I really do see why the developers were trying to reinvent the game and broaden customer base. But quite honestly, I really don't want a reinvented game. I want an upgrade to my favorite game of all time! And I know you guys are gonna tell me to go back and play Civ4 if I love it so much. And that's fair. But will I ever get the Civ4 upgrades that I'm hoping for?
Actually - the game you want already exists... and it's completely free.
If you haven't yet -- you should really check out the Rise of Mankind/A New Dawn mod and mod-mod.... Afforess' latest/last implementation of
AND is now self-contained (includes RoM), too (v1.75).
I've been playing AND for years now, and I would have gladly
paid for it as a BTS expansion.
It's got about double the techs, double the buildings, double the wonders, doubles the resources, doubles the events, and double the units of BTS vanilla.
It adds in the "Revolution" option, which is a much more effective sprawl stifler (civilizations that expand too quickly get rocked by revolutions -- nationalist/separatist units spawn and try to gain independence).
It includes a barbarian civ option, where barbarian cities can eventually spawn into new civilizations, as well as allowing barbarians to spawn generals of their own.
It adds additional diplomatic options -- embassies, different types of access (Right of passage, which allows only non-combat unit access), as well as trading workers, certain military units ('machine-based' -- siege engines and ships), and contact with other players.
It even has a customizable 1UpT option where you can limit the number of units to occupy a single tile (changeable in game, as you play).
I'm among those sorely disappointed in CiV -- but as the sunshine brigade likes to say, CiV didn't uninstall IV.... and thank god for that, because having already spent 1000s of hours playing AND, went back to it this weekend and I think it's easily got another few thousand hours in it.