Here is a scenario I've been working/playing on for a bit. It is a 124x124 map with 10 civ starting locations. The civs are on large islands/small continents, some singly but most in groups of 2 or 3. Some changes were made to the standard rules, but all within the ability of the Firaxis Editor. A more detailed text file is included with the scenario. I appreciate comments.

Walt
aka datarush

Here's a jpg of the 10 broods scenario. Many of the smaller islands are the only locations for resources needed for industrial/modern units.