Electronics enthusiast Jason Hickner has gone retro by conjuring up this cool clock that tells the time via a game of Space Invaders. All he needed was an old Sony portable TV and a circuit that generates the video to create the game. To tell the time, each extra life shows the hours, while every alien represents one minute. For those who are too busy to count aliens at a glance, the last four digits of the high score will also do the trick.

Source: MAKE