Perhaps the first ever “video game,” William Higinbotham’s 1958 Tennis for Two used an oscilloscope was used to render the match.  More recently, Nixiebunny brought things full circle with their Teensy 3.6-powered Scope Clock.

The clock uses the Teensy’s DACs to render the display, which can take the form of an analogue or digital clock face, but can also be used, along with the device’s integrated knobs, to play Tetris, or that other famous ball-bouncing simulator: Pong.

An integrated USB port allows for the addition of a gamepad or GPS receiver. While the code is not currently available, Nixiebunny has plans to make it open-source once the device is on sale.

Unlike William Higinbotham’s 1958 Tennis for Two which simulated the physics of the titular ball on the Donner Model 30 analogue computer, requiring considerable equipment for a public showing in 1959, Nixiebunny’s compact all-in-one build uses modern electronics paired with a Cathode Ray Tube.