Saecula has its foundations. The simulation starts on 1 January 1000, runs day by day at five speeds, and keeps a chronicle that opens a new annal every year. Everything in the world, from terrain to goods, religions and cultures, is loaded from data, so it can be modded later.
The first close view is in too: hamlets, villages and towns generated from rules, with roads, plots facing the street, a church and sometimes a lord's hall behind a palisade. Switch the age and the same village rebuilds itself, from wattle, daub and thatch around 1000 to timber framing, chimneys and tile by 1250.