RetroGaming

One thing about old games (pre n64), is that you don't have to worry about controlling the camera. Younger kids like 5 or so have a hard time enough time timing button presses so making them also have to figure out how to control the camera is very frustrating for them. Isometric, top down, and point and clicks work best for younger kids.

I also think the super Nintendo controller is the best for children and people with small hands. 8bitdo makes a good modern one with more buttons and triggers so you can play modern games.