Shoot the Moon is an old fashioned wooden game that's been around since the 40s, but I recently played with it a friend's house and it's awesome! Basically all you do is place the metal ball on the metal rails at the bottom and slowly, very slowly, spread the metal rails apart at the top. The metal ball will now magically roll uphill towards you! The object of the game is to see who can get the ball to roll the furthest without it falling. Underneath the rails are holes that the ball drops into that gives you a score. I swear it's the most fun addictive thing I've played with in years. The one pictured is called Space Force, but it's the same thing.
Shoot The Moon Game - Can You Roll A Ball Uphill?