This happens when your flat screen TV at home is just not big enough …
When playing video games, size really does matter. So these guys decided to play Space Invaders on a multi-story building with a “screen diagonal” of at least 100 meters (110 yards).
Therefore they needed to hack the indoor lighting of the skyscraper at a place some hundred meters away to play. Because of the individual activation of the lights in each office and the immense technical effort needed, the video may be fake.
And — fake or not — it would be a real annoyance to control everything from a single laptop away in the distance. Anyway wouldn’t this be a great way to play Tetris?