In Photosynthesis, take your trees through their life-cycle, from seedling to full bloom to rebirth, and earn light points as their leaves collect energy from the revolving sun’s rays. Carefully pick where you sow and when you grow, as trees in the shadows are blocked from light, and from light points.
Players score light points if their trees are in the direct lines of sun rays or taller than the trees blocking them from the sun rays. In a second phase, players use their light points to reserve seeds or trees, then plant or grow them on the board. Points are scored by maturing trees and removing them from the board.