Past Games

We use an oscilloscope (analog, x-y-mode) connected to a microcontroller (Teensy 3.2) and DAC (digital analog converter, MCP 4922) to display lines mimicking classical vector displays.
This is a 'natural interaction' fitness game. You have to defend your home against an army of hostile bugs.
A pong you play with lasers, a projector, and a webcam. And maybe speakers.