The above is hobakyeot, or traditional pumpkin candy that is broken up into small pieces. Now you would think this is some kind of hard crunchy thing to eat, however once in your mouth it starts to melt and releases a tangy sweet taste.
I'm not sure if the above game is strictly a Korean traditional one, as "hoop rolling" or "hoop trundling" is found in other nations. But the basics are there consisting of a metal hoop and a hook like metal stick to push this thing along. However, this one's a tricky game where it takes a few practices to get the idea of how it works.