Two versions of my big map Serpentis (made a long time ago but never released here).
Normal version is a free for all with the 12 races playable, each starting with a 3 hex city and several other friendly towns nearby.
The hard version is about the fall of the human empire of Serpentis, the 8 playable races being the minor powers, while the humans, their orcs and undeads enemies and the lizardmen start with several cities, lots of gold and big armies. Good factions start allied with the human empire (and so at war with the undeads and orcs) while others are neutral.
Recommanded settings : leaders on (customized... if you absolutely want), explore on (there are several labyrunths), simultaneous turns (because it's looong to wait for the AIs on such a big map).
Note that while I've translated the introduction texts, in map texts and new items names are in french (I'm a bit lazy).