Artists from the Gaffa Gallery installed a series of falling giant Tetris pieces in an alleyway in Sydney. They write:

There are grand implications of error here that lead to questions, such as who exactly has been playing Giant Tetris? What were they trying to do? Could I have done better? Is the city grid similar to a computer game or different? What brain-space am I in when I’m playing games on my computer? Is it more or less alert than when I’m waiting in line for a sandwich? The work seeks to challenge conceptions of the North end of Sydney’s CBD as an orderly, socially cold grid and beckons viewers to assess their own level of interaction, play and hacking within the city

Justin James via Inspire me, now!

A student group in Poland executed a series of projects where they used the lights in their dorm room to create awesomeness. In the above video you can see a game of Snake and a bit of Pong at the very end. Their YouTube channel has several other videos, including this James Bond video:

There have been several examples of students using the same technique to create massive games of Tetris. Here’s a video a Russian group that pulled it off:

And don’t forget Improv Everywhere’s mission Look Up More that put humans in department store windows: