Guide a ball down a well towards a flag. The trick here -- and there's always a trick, isn't there? -- is that you're not actually moving the ball, you're moving the well around the ball, as well as slowing the ball down when necessary. At first it's disorienting, but eventually you get used to it. The evil thing is that once you get used to it, all other games become disorienting
Descent [Armor Games]