Just for grins, here's the progress of my current game of Civ4 using the Wolfshanze mod... I started it using v2.60 and am currently still playing it using v2.65 (under development... already have some new custom unit-models).
I'd call it, "Wolf's World War" since it's a war that is quite literally raging on five continents and almost every major world power is involved (all against me too!).
I'm in a pretty-good continental war right now in the late-industrial/early-modern era...
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Wolf's World War
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I have a large map with five large continents on the map... my Germans were on a continent with Aztecs, Chinese & Russians... I eventually destroyed them all... gaining complete mastery of my continent and bringing the entire continent under the homeland influence of the Germans... a very nearby continent (reachable by shallow coastal water and a shallow "inland" sea) contained the Ethiopians, Zulus, Japanese and Spaniards... the latter three all becoming allies or vassals of the Ethiopians. A third continent contains the Persians, Mongolians, Malinese and a few other civs (I forget off the top of my head) who are all roughly equal to my Germans in technology (if not in production or citizenry). There is a fourth "new" continent that had no native civs on it and could only be reached after astronomy... there has been an "old world" race to colonize that 4th continent.
Well, as luck would have it, I started staging "incidents" on the 4th continent to gain control of Ethiopan lands (and hopefully bring at least half of the new continent under firm German control). Eventually war was sparked and now my Germans are at war with the Ethiopians, Japanese, Zulu, Spanish, and two more allies of the Ethiopians, the Mongolians and Persians... all at war with little-old Germany. I've held a SLIGHT tech-edge against the Ethiopians and there has been a MASSIVE naval war over the inland sea between our two continents... my modest fleet of Pre-Dreadnoughts and Protected Cruisers have been duking it out with a rather huge Ethiopian fleet of Ironclad Battleships and Ironclad Cruisers. Meanhwhile over on the 4th continent, my Germans have managed to kick-out the Ethiopians and Mongolians, but the Persians have machine gunners and airships holding his own area, so it's now trench warfare... it's okay, because I'm about to unleash my newly invented biplanes on him in another turn or two!
Continents are numbered above:
1) My home German continent... Capital of Berlin in center of box (Germans in Dark Grey)
2) My enemies continenent across the shallow inland sea (Ethiopians in light blue)
3) Continental home of most other civs in game
4) New-World continent I am fighting over with other civs
5) under-developed continent of Spaniards and Babylonians
{Continents 1, 2 & 3 were "home civ" continents, while 4 & 5 were "new world" continents}
Random Map created with SevenSpirits "NewWorld" map script, included in my Wolfshanze Mod...
Settings: "Large World", "3 Continents", "Few Islands", "New World On"