Looking back, video game design seems a natural fit, although there was no such thing when I was growing up. I built a Tic-Tac-Toe playing machine in my teens which went up in smoke on the night it was scheduled to go to a science fair.
Garry Kitchen and I played hugely competitive matches of Amazing Tennis. There is a great thing about that game from a tennis player's perspective.
The letters were universally complimentary, and we designers loved hearing that our games were being enjoyed, but if they weren't sending us a picture of their screens most of those writers would have spent their time playing the game rather than writing letters.