In a recent Gamasutra blog post professing his adoration and fright of Sinistar, Michael Molinari brought up an interview with the arcade game's creator Noah Falstein, in which he revealed, "There's an easter egg hidden in the attract mode, triggered by an odd combination of button presses that we've all forgotten, but soon I may have the chance to rediscover it."

Though Molinari was unable to find further details on the attract mode feature, commentor Ross Patrol located Jeff Vavasour's instructions on bringing up the easter egg, and created a video demonstrating the odd combination of button presses and its effects:

It's a complicated series of steps, but now you can look up the game's developers on Sinistar's screen whenever you want!