Diatoms is a puzzly tile-placement, pattern-making game where you create beautiful mosaics out of microscopic algae. Take turns placing tiles representing algae colonies, earning diatom algae tiles of different colors and shapes. Then thoughtfully place these diatoms on your mosaic, taking care to consider how your arrangement will be scored by the judges at the end of the game. Everyone will create a unique mosaic, but only one player will win first place for their microscopic art!