Hyperscape 1 is an installation using 10 networked Mac Classics running Hypercard.
The HyperCard program simply creates a list of variables and passes this list as a single variable to each of the other computers. On receipt of a new set of variables the other macs then draw on the same information as the controller, but with a 1 in 10 chance of deciding not to.
Interesting stuff. Wired is running an article about it.