RisenWorld! Medieval

From the introduction:

Jerusalem! The hot desert sun burning down upon the arid sands as caravan after caravan of merchants and travelers flock through this major pool of sentience. A walk down its streets brings glances at sights older than ant empire, and temptations as old as humanity. Elven crystal mages vie for the attention of passers by, as much as pixie thieves try to avoid it as they go about their business. Everywhere are the bronze and steel-armored legions of the Roman Centaur empire, as Judaic Humans round up another batch of Christians of many races in yet another futile attempt to stamp out what they have termed the most dangerous heresy their world has yet known...