Eras

Five ages of new vehicles and buildings.

The game starts in 1950 or later. Every 15 years a new era begins and brings new vehicles, bridges and buildings, and new industry chains: Industry chains.

Each new era also

• raises the output of every mine, farm, forest, well and rig by 15%, except a kind on its way out: from 2010 coal mines lose 3% of their output every year instead
• makes plants give 10% more for what you deliver
• makes towns grow about 9% faster

The news announces each new model. The Timeline (T) shows what you have and what is coming, and Year by year lists every arrival.