In biorhythm, you play as bacteria lost in the human body. As the heart beats, everything in the body moves to the rhythm. You'll swim through the bloodstream to the beat, exploring, fighting other microbes, and duplicating yourself as you go.

As the progression of your lifecycle weakens the body, you'll face terrifying challenges; hungering white blood cells, intense fever, and, in the end, the other copies of yourself.

The game runs 2.5 - 3 hours. It features hand-painted art, an orchestral score, and a thrilling story.