Each image is like a garden in which newly-cultivated plants are left to their own devices. The way images look is not only a result of the collective behavior of the organisms, but also the result of the users. By using touching the screen, visitors can influence the visual patterns displayed on the monitors. They can deactivate one of the four pixel gardens. Voting out the least exciting images devalues those particular genes and upgrades the genes of the three surviving pixel gardens. In other words a group of organisms evolves that contains properties that generate the most pleasing collective image. That is, until the computer 'resets', which happens when a predetermined number of votes has been cast. And then the whole process begins again.