Each round takes 10 seconds so all players are involved. The rules are pretty straight forward. You can play solo or with as many people as you want. The player with most cards after 5 or 10 minutes wins!
You are the leader of one of the seven great cities of the ancient world. 7 Wonders lasts three ages. (Players have individual boards with special powers on which to organize their cards, and the boards are double-sided).