Bowl two balls per frame to see if you can knock down all the cups. Write down your score on a piece of paper to see if you improve from game to game. A perfect score in Stack Bowling is 42! Only count a cup if it falls over onto its side.
Frame 1: 3-Stack
Frame 2: 6-stack
Frame 3: 3-3-3 (9 cups)
Frame 4: 6-6- (12 cups)
Frame 5: 1-10-1 (12 cups)
Variations
Allow younger players more ball rolls per frame. Use more cups for additional frames or create new towers to continue for frames 6-10.