Hidden in the water all around us are tiny lifeforms known as “diatoms.” These microscopic algae cells come in a variety of exquisite geometric shapes and patterns. Their outer layer is made with silica, giving them a glass-like quality. Here at the Society for the Microscopic Arts, we collect these diatoms and delicately arrange them on slides into beautiful, tiny mosaics. As part of your induction into the Society, you will each create your own entry for today’s Exhibition of Microscopic Mosaics.

Diatoms is a puzzly tile-placement, pattern-making game where you create a microscopic mosaic out of single-cell algae. Vie with your fellow players to collect and place diatom tiles to create mosaics. Take turns placing tiles representing algae colonies, earning diatoms of different colors and shapes. Then strategically place these diatoms on your own 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.

Diatom mosaics are a real thing, though this artform has only ever been practiced by a vanishingly small number of people. Diatoms themselves are also a pretty big deal as they produce up to 50% of the oxygen we breathe.

Celebrate both obscure art and the ubiquitous wonder of science with this beautiful, cozy, thinky game!

(Are you press or a content creator? Diatoms Press Kit here.)

Update! Solo Variant: Diatoms “Commissions”
Commissions is a single-player option for Diatoms, where you collect diatom tiles as in the main game, while trying to create a mosaic that fulfills specific requirements.