Toy Factory

A small proof of concept that has the industries look change between eras and dynamically changing requirements depending on the era. Adds a Toy Factory to every climate, delivering Toys to all towns. Its inputs change with the times: wooden toys from planks until 1960, then plastic toys join in, and from 1990 planks are no longer accepted at all. Existing factories are converted and a news message announces each change, so keep your supply chains up to date. Tools work as a booster in every era. The factory's look changes too: a brick-and-timber workshop, plastic pellet silos from 1960, and a modern plant from 1990.