In Uchronia, you are the patriarch of a great Uchronian noble house, competing with the other houses that commit their wealth to building the city, enriching it with new constructions, and striving to win over the people.
In game terms, players start with six resource cards in hand, then each discard a card to the shared forum; each resource card shows the type of resource (with color-coded five resources in the game), an activity icon (with, for example, all yellow clay cards showing a pick), and an order (with yellow showing Production). Five building cards are placed face-up in the Great Works area and can be built by the players; any time a building is taken from this area, reveal another building card.
On a turn, you first move any card(s) played the previous turn to the forum, then you either Command or Plot. To Command, you play one card from your hand with the order you want to carry out or two identical cards, which allows you to take any order. The orders are
Production, Exploration, Draconians, Trade, and Construction.
If you Plot instead of Command, you first copy one order showing in another player's area (if you have an activity of the same color), then you either draw until you have five cards or draw one card (if you already have at least five).
The game continues until one or more players hits a VP threshold (14-20 depending on the number of players).