The lane seen from above, the ten pins at the end and the gutters on the sides. Swipe up: the ball rolls in the direction of the swipe; with spin (the tool at the bottom) it curves towards the end. Pins that get hit fall and push the ones behind. Ten frames with real bowling scoring: a strike (all pins on the first ball) and a spare (all in two) count the following balls, and the tenth frame has the extra balls. The notches widen the gutters and make the oil slicker.
Mini Games GO