Volleyball, Korean style

This is a game of...... Volleyball? Soccer? Tarsal tennis? Boot ball? I have no idea. The net is low, like a tennis net, but it's more similar to volleyball: There are six players on a side and it's three hits and over. But the kicker (hahahahaha) is that the ball can only be touched with the feet. I watched them play for a bit and it's amazing how easily they pass it to each other. I even saw one of them 'spike' it, which is impossible to describe.