Thousands of years ago, Planet Solenia lost its day night cycle. Since then the northern hemisphere has been in the dark while the sun shines on the southern side. But through trade and transport, the residents succeed in surviving and expanding their world. In Solenia, players now have to take on this task to deliver goods with the airship from the night side to the day side and vice versa. In several rounds they play cards by hand, take over flying production islands or cities fulfil orders and move the airship. Those who have only 16 cards to collect most gold stars are the winner in this sophisticated game with light and darkness.