The aim of te game Circadians: First Light is to lead a team of researchers on the planet of Ryh. Players need to manage their crew (dice) to visit various parts of the planet for trade, farming, construction and research. Players score points for negotiating with the locals, harvesting resources for the depository, upgrading their research base, exploring the planet, and collecting gems. The game is played over eight rounds. At the end of the final round, the player with the most points wins!