It gets very blurry in the early days of video games. Ahoy made a great video about just that, actually: https://m.youtube.com/watch?v=uHQ4WCU1WQc&pp=ygUYYWhveSBlYXJsaWVzdCB2aWRlbyBnYW1l
Basically, there’s earlier games than pacman, but what actually constitutes a video game starts to become a much less trivial question.
I play it with hotas and it works fine. You’ll absolutely still want to keep a keyboard and mouse handy though because the RTS/management half of the game is really not that well controlled with a flight stick.