Kellearth is my medianworld. The main differentiator is the mobility: half the population has lived in their current metropolis for less than three years. Many of the other changes are downstream of this one: governments are much more authoritarian, geography is much less important, and trade is more common. Immigration is almost unrecognizable.

The population is much wealthier due to a high desire for savings, but low interest in consumption-signalling games leaves overall working hours somewhat below OTL average due to the sheer number of early retirements and overall GDP is fairly similar at a given tech level. Gender is more consensual and presentation-linked.

Computers above a certain level of complexity catch fire.