Pyst is a parody of the highly successful adventure game, Myst. The parody features full motion video of actor John Goodman as "King Mattruss", the ruler of "Pyst Island".
The basic concept of Pyst was to show what Myst Island (from the best-selling game) would look like after four million people (players) had visited and "explored". Pyst Island is full of litter, most of the buildings are ruined, and graffiti reveals secret doors and solutions to puzzles that challenged players in Myst. Pyst utilizes three-dimensional graphics, animated drawings, and pre-recorded video and audio.
Source: Wikipedia, "Pyst," available under the CC-BY-SA License.