Quake was launched on an oscilloscope

The programmer Pekka Väänänen created a version of the classic Quake shooter for an oscilloscope. In his blog, he talked about the process of converting the graphics of the game into an audio signal that is fed to the device. As a result, the beam highlights on the screen a simplified schedule from Quake - and allows you to play using the oscilloscope as a screen.

If you want to play [in Quake], you can buy an oscilloscope of the Hitachi V-422-a model that is used in the demonstration-for $ 149 on ebay (English ulcer).

The Verge