The game is quite impressive for 1962. I'd also expect the first game to be something like tic-tac-toe, should be easier than such a real-time game.

The circular screen also brings up the idea of having circular displays today. It seems at first pretty inefficient, like windows are rectangles, duh. But such constraints can produce creative solutions, a very different way how to layout the UI. It's fun to think about how it could look like. (we have circular screens in many watches, but that's a bit special case ...