Massive Pixel Environment (formerly Most Pixels Ever: Cluster Edition) is a library from the Texas Advanced Computing Center's A Thousand Words Project, inspired by and expanding on the original Most Pixels Ever developed by Daniel Shiffman. It extends Processing sketches to multi-node tile displays, enabling users to display output across multiple systems and displays, at the native resolution of those displays. This allows for a dramatic increase in the amount of data that may be visualized at one time, in comparison to a single-screen display.