Wow. I still remember the first time I played a Mode 1 game that had ‘sound’. I think t was called Space Trek or Graphic Trek and was a Star Trek style space game.

Fire phasers and the thing made sound. Mind blown.

The thing to remember is the Model 1 had zero sound designed in the thing.

This game made sound by RAPIDLY turning on/off the relay that controlled the tape deck. The Relay!!!

Soon thereafter the standard practice was to unplug the tape deck and hookup the speaker and the thing made sound using the same equipment that made the audio to record the programs on the tape drive. I now know if that hadn’t happened we’d have all burned out the relays in the thing…

Wild times.